| INSTITUTE FOR EDUCATIONAL DATA SYSTEMS | — | 0509736 | 1966-05-26 | Suspended | |
| INSTITUTE FOR EDUCATIONAL DEVELOPMENT | — | 0539996 | 1968-01-31 | Dissolved | |
| INSTITUTE FOR EDUCATIONAL ENRICHMENT | — | 1648832 | 1989-09-19 | Dissolved | HAYWARD |
| INSTITUTE FOR EDUCATIONAL EQUITY, INC. | — | 4578117 | 2020-03-12 | Suspended | CAMARILLO |
| INSTITUTE FOR EDUCATIONAL GOVERNANCE AND PERFORMANCE | — | 2032162 | 1997-07-28 | Dissolved | |
| INSTITUTE FOR EDUCATIONAL LEADERSHIP | — | 0668771 | 1972-11-06 | Dissolved | SAN JOSE |
| INSTITUTE FOR EDUCATIONAL SERVICES, INC. | — | 1948641 | 1995-09-05 | Dissolved | STOCKTON |
| INSTITUTE FOR EDUCATIONAL THERAPY | — | 1244845 | 1984-04-23 | Dissolved | SEBASTOPOL |
| INSTITUTE FOR EFFECTIVE BEHAVIORAL INTERVENTIONS, INC. | — | 3210548 | 2009-06-05 | Active | VAN NUYS |
| INSTITUTE FOR EFFECTIVE LIVING | — | 0951252 | 1980-02-01 | Suspended | LOS ANGELES |
| INSTITUTE FOR EFFECTIVE LIVING | — | 1238001 | 1984-02-02 | Dissolved | SAN BERNARDINO |
| INSTITUTE FOR EFFECTIVE SCHOOL LEADERSHIP | — | 1591230 | 1987-07-01 | Dissolved | |
| INSTITUTE FOR ELDER CARE, INC. | — | 2881236 | 2006-05-25 | Suspended | LONG BEACH |
| INSTITUTE FOR EMERGENCE | — | 4280176 | 2019-05-24 | Active | BERKELEY |
| INSTITUTE FOR EMPLOYEE DEVELOPMENT, INC. | — | 1638140 | 1989-03-31 | Dissolved | |
| INSTITUTE FOR EMPOWERMENT LLC | — | 202200410774 | 2022-01-02 | Active | HUNTINGTON BEACH |
| INSTITUTE FOR ENERGY ECONOMICS AND FINANCIAL ANALYSIS, INC. | — | 5231454 | 2022-09-02 | Active | NORTH CANTON |
| INSTITUTE FOR ENERGY FUNDING LTD. | — | 1282121 | 1985-08-01 | Revoked | |
| INSTITUTE FOR ENGINEERING AND DESIGN | — | 1188941 | 1985-12-11 | Suspended | HENDERSONVILLE |
| INSTITUTE FOR ENGLISH LITERACY | — | 4665590 | 2020-11-16 | Active | DAVIS |
| INSTITUTE FOR ENTERPRISE DEVELOPMENT, INCORPORATED | — | 2229224 | 2000-04-13 | Dissolved | RANCHO SANTA FE |
| INSTITUTE FOR ENVIRONMENT AND TECHNOLOGY | — | 2237850 | 2000-05-19 | Dissolved | OAKLAND |
| INSTITUTE FOR ENVIRONMENTAL ACTION, INC. | — | 0799753 | 1977-08-01 | Revoked | |
| INSTITUTE FOR ENVIRONMENTAL AND ECOLOGICAL RESEARCH | — | 2940600 | 2007-01-05 | Dissolved | NAPA |
| INSTITUTE FOR ENVIRONMENTAL HEALTH, INC. | — | 3007140 | 2007-06-18 | Active | LAKE FOREST PARK |
| INSTITUTE FOR ENVIRONMENTAL MANAGEMENT | — | 1868941 | 1993-10-20 | Suspended | WALNUT CREEK |
| INSTITUTE FOR ENVIRONMENTAL SECURITY-NORTH AMERICA | — | 3216219 | 2009-06-30 | Dissolved | |
| INSTITUTE FOR ENVIRONMENTAL TECHNOLOGIES INC. | — | 2335902 | 2001-03-16 | Suspended | OAKLAND |
| INSTITUTE FOR ENVIRONMENTAL, CAMPING AND OUTDOOR EDUCATION | — | 0752060 | 1975-08-11 | Dissolved | PETALUMA |
| INSTITUTE FOR EQUINE RESEARCH INC. | — | 1126902 | 1982-11-01 | Dissolved | ATASCADERO |
| INSTITUTE FOR ESSENTIAL DEVELOPMENT | — | 1227045 | 1983-09-15 | Dissolved | |
| INSTITUTE FOR ETHICS AND HEALTH POLICY, INC. | — | 1506270 | 1988-12-21 | Dissolved | SAN FRANCISCO |
| INSTITUTE FOR EVIDENCE-BASED CHANGE | — | 3163270 | 2008-09-15 | Active | LONG BEACH |
| INSTITUTE FOR EVOLUTIONARY STUDIES | — | 1194696 | 1986-12-16 | Dissolved | PALO ALTO |
| INSTITUTE FOR EXCELLENCE | — | 1948802 | 1995-09-08 | Suspended | IRVINE |
| INSTITUTE FOR EXCELLENCE IN DISPUTE RESOLUTION | — | 2927615 | 2006-09-01 | Suspended | WOODLAND HILLS |
| INSTITUTE FOR EXCELLENCE IN EDUCATION | — | 3666372 | 2014-04-14 | Suspended | LA CRESCENTA |
| INSTITUTE FOR EXCELLENCE IN WRITING, INC. | — | 2560551 | 2003-10-06 | Dissolved | ATASCADERO |
| INSTITUTE FOR EXCEPTIONAL CARE | — | 4817881 | 2021-12-06 | Active | WASHINGTON |
| INSTITUTE FOR EXECUTIVE RESEARCH | — | 1847825 | 1992-12-01 | Suspended | SHERMAN OAKS |
| INSTITUTE FOR EXECUTIVE RESEARCH, INC. | — | 0571025 | 1969-05-27 | Dissolved | |
| INSTITUTE FOR EXISTENTIAL AND ONTOLOGICAL ANALYSIS | — | 1048885 | 1981-07-08 | Dissolved | NEWPORT BEACH |
| INSTITUTE FOR EXPERIENTIAL EDUCATIONAL RESEARCH | — | 0616157 | 1971-01-22 | Suspended | MILL VLY |
| INSTITUTE FOR EXTRA GALACTIC RESEARCH | — | 0613676 | 1970-12-17 | Dissolved | AUSTIN |
| INSTITUTE FOR FACULTY ENRICHMENT | — | 1240603 | 1984-03-06 | Dissolved | SAN FRANCISCO |
| INSTITUTE FOR FAIR ELECTIONS | — | 2117816 | 1998-08-11 | Active | NEWPORT BEACH |
| INSTITUTE FOR FAMILIES | — | 1418987 | 1987-09-30 | Active | CORONA |
| INSTITUTE FOR FAMILIES & TAXPAYERS | — | 2513852 | 2003-04-23 | Dissolved | TUSTIN |
| INSTITUTE FOR FAMILY & COMMUNITY RELATIONS | — | 2114196 | 1998-07-03 | Suspended | ANAHEIM |
| INSTITUTE FOR FAMILY AND PERSONAL DYNAMICS | — | 0907421 | 1979-01-02 | Dissolved | LAFAYETTE |
| INSTITUTE FOR FAMILY CENTERED CARE, INC. | — | 4189248 | 2018-08-27 | Active | LUTHERVILLE TIMONIUM |
| INSTITUTE FOR FAMILY CENTERED SERVICES, INC. | — | 3628637 | 2013-12-24 | Active | EDINA |
| INSTITUTE FOR FAMILY COUNSELING | — | 2117793 | 1998-08-10 | Dissolved | PLACERVILLE |
| INSTITUTE FOR FAMILY DEVELOPMENT | — | 1477848 | 1990-03-05 | Dissolved | ARCADIA |
| INSTITUTE FOR FAMILY DEVELOPMENT AND EDUCATION, INC. | — | 1022433 | 1981-04-03 | Suspended | |
| INSTITUTE FOR FAMILY DEVELOPMENT INTERNATIONAL | — | 2001451 | 1997-01-21 | Suspended | SAN FRANCISCO |
| INSTITUTE FOR FAMILY DYNAMICS | — | 1141818 | 1983-05-13 | Suspended | SANTA ANA |
| INSTITUTE FOR FAMILY LIVING | — | 1415429 | 1987-08-14 | Suspended | TUSTIN |
| INSTITUTE FOR FAMILY MEDICAL CARE, INC., A MEDICAL CLINIC | — | 0860232 | 1978-02-06 | Suspended | TUSTIN |
| INSTITUTE FOR FAMILY NEUROSIS RESEARCH | — | 0413320 | 1961-05-01 | Suspended | |
| INSTITUTE FOR FAMILY RELATIONS, INC. | — | 1139183 | 1983-04-11 | Suspended | |
| INSTITUTE FOR FAMILY RESEARCH AND EDUCATION | — | 2078459 | 2000-01-26 | Dissolved | PLEASANTON |
| INSTITUTE FOR FAMILY RESEARCH AND TRAINING, INC. | — | 0669652 | 1972-11-20 | Suspended | |
| INSTITUTE FOR FAMILY SKILLS | — | 1972374 | 1996-06-20 | Dissolved | SANTA MARIA |
| INSTITUTE FOR FAMILY TRAINING, INC. | — | 0858713 | 1978-01-10 | Suspended | |
| INSTITUTE FOR FAMILY WEALTH COUNSELING, INC | — | 3525496 | 2012-12-21 | Dissolved | NEWPORT BEACH |
| INSTITUTE FOR FERTILITY RESEARCH | — | 1822837 | 1992-06-08 | Dissolved | LOS ANGELES |
| INSTITUTE FOR FIDUCIARY EDUCATION | — | 1267330 | 1985-02-01 | Suspended | SACRAMENTO |
| INSTITUTE FOR FIDUCIARY SCIENCES, INC. | — | 0558408 | 1968-12-06 | Suspended | |
| INSTITUTE FOR FIELD RESEARCH | — | 3363643 | 2011-03-04 | Active | |
| INSTITUTE FOR FILIPINO RESOURCES AND INFORMATION | — | 1129313 | 1982-12-02 | Dissolved | ALAMEDA |
| INSTITUTE FOR FILM EDUCATION | — | 2420418 | 2002-06-18 | Suspended | HANFORD |
| INSTITUTE FOR FINANCIAL ACHIEVEMENT | — | 0628399 | 1971-07-06 | Suspended | |
| INSTITUTE FOR FINANCIAL AWARENESS INC. | — | 2500490 | 2003-03-10 | Suspended | CITRUS HEIGHTS |
| INSTITUTE FOR FINANCIAL EXCELLENCE | — | 2236416 | 2000-05-26 | Suspended | SACRAMENTO |
| INSTITUTE FOR FINANCIAL FREEDOM, INC. | — | 3711646 | 2014-09-16 | Revoked | POMPANO BEACH |
| INSTITUTE FOR FINANCIAL GUIDANCE, INC. | — | 0898009 | 1978-09-21 | Dissolved | SAN DIEGO |
| INSTITUTE FOR FINANCIAL LITERACY | — | 0508885 | 1966-05-09 | Suspended | LAGUNA HILLS |
| INSTITUTE FOR FINANCIAL MASTERY, INC. | — | 3259032 | 2009-11-06 | Active | NEWPORT BEACH |
| INSTITUTE FOR FINANCIAL PLANNING | — | 1081025 | 1981-06-26 | Dissolved | |
| INSTITUTE FOR FINANCIAL PLANNING EDUCATION | — | 3106426 | 2008-11-13 | Suspended | CASTRO VALLEY |
| INSTITUTE FOR FINANCIAL PLANNING, INC. | — | 0344349 | 1957-09-24 | Suspended | |
| INSTITUTE FOR FINANCIAL SERVICES, INC. | — | 1238577 | 1984-02-06 | Suspended | IRVINE |
| INSTITUTE FOR FIRE AND BURN EDUCATION, INC. | — | 1526450 | 1986-03-17 | Suspended | CANOGA PARK |
| INSTITUTE FOR FISHERIES RESOURCES | Agriculture and forestry | 1849069 | 1992-12-14 | Active | SAN FRANCISCO |
| INSTITUTE FOR FOLLICULAR LYMPHOMA INNOVATION | — | 4856927 | 2022-03-01 | Active | DIAMOND BAR |
| INSTITUTE FOR FOOD AND DEVELOPMENT POLICY, INC. | — | 0832097 | 1977-11-14 | Active | OAKLAND |
| INSTITUTE FOR FOREIGN REAL ESTATE INVESTMENTS IN THE UNITED STATES | — | 0936898 | 1979-07-31 | Suspended | LOS ANGELES |
| INSTITUTE FOR FORMAL STUDIES, INC. | — | 0502361 | 1966-01-03 | Suspended | |
| INSTITUTE FOR FREE SPEECH | — | 3188544 | 2009-01-26 | Active | WASHINGTON |
| INSTITUTE FOR FREEDOMS, INC. | — | 4631377 | 2020-08-12 | Active | Los Angeles |
| INSTITUTE FOR FRONTIER SCIENCE | — | 2012485 | 1997-05-30 | Active | EMERYVILLE |
| INSTITUTE FOR FUNCTIONAL APPLIED RESEARCH | — | 1237095 | 1984-01-27 | Suspended | |
| INSTITUTE FOR FUNCTIONAL HEALTH AND NUTRITION | — | 5905945 | 2023-09-15 | Active | PANORAMA CITY |
| INSTITUTE FOR FUNCTIONAL RECOVERY, LLC | — | 200732110356 | 2007-11-13 | Suspended | SANTA ANA |
| INSTITUTE FOR FUNDAMENTAL SCIENCES | — | 1942131 | 1995-06-06 | Suspended | IRVINE |
| INSTITUTE FOR FUNGUS RESEARCH, INC. | — | 0534125 | 1967-10-04 | Dissolved | |
| INSTITUTE FOR FUTURES ANALYSIS | — | 0605413 | 1970-08-18 | Suspended | |
| INSTITUTE FOR GAUDIYA VAISHNAVISM INC. | — | 2040350 | 1998-09-18 | Dissolved | CORAL SPRINGS |
| INSTITUTE FOR GENDER PARTNERSHIP, LLC | — | 201521510506 | 2015-07-31 | Active | EL DORADO HILLS |
| INSTITUTE FOR GENETIC DISEASE CONTROL IN ANIMALS | — | 1669318 | 1990-07-23 | Dissolved | LOS ALTOS HILLS |
| INSTITUTE FOR GENOME MEDICINE INC. | — | 2716435 | 2004-12-10 | Suspended | MILL VALLEY |
| INSTITUTE FOR GIRLS' DEVELOPMENT, A PSYCHOLOGICAL CORPORATION | — | 2650827 | 2004-05-03 | Active | PASADENA |
| INSTITUTE FOR GLOBAL COMMUNICATIONS | — | 1195632 | 1987-02-10 | Dissolved | SAN FRANCISCO |
| INSTITUTE FOR GLOBAL CONSTRUCTION, LLC | — | 200012310083 | 2000-05-01 | Dissolved | SAN DIEGO |
| INSTITUTE FOR GLOBAL ENGAGEMENT LLC | — | 200925710275 | 2009-09-11 | Dissolved | OCEANSIDE |
| INSTITUTE FOR GLOBAL FUTURES | — | 4312223 | 2019-08-27 | Active | SAUSALITO |
| INSTITUTE FOR GLOBAL HEALING | — | 2046034 | 1999-08-04 | Dissolved | SAN DIEGO |
| INSTITUTE FOR GLOBAL HEALTH AND RESEARCH | — | 3876337 | 2016-02-17 | Suspended | IRVINE |
| INSTITUTE FOR GLOBAL PERIOPERATIVE CARE | — | 4218834 | 2018-12-10 | Active | |
| INSTITUTE FOR GLOBAL SOLUTIONS | — | 2152003 | 1999-12-17 | Suspended | CEDARPINES PARK |
| INSTITUTE FOR GLOBAL STUDIES | — | 1283864 | 1985-08-15 | Dissolved | SALINAS |
| INSTITUTE FOR GLOBAL TRANSFORMATION, INC. | — | 3308826 | 2010-05-14 | Dissolved | BRASELTON |
| INSTITUTE FOR GOLF RESEARCH, INC. | — | 2090664 | 1998-07-27 | Suspended | ESCONDIDO |
| INSTITUTE FOR GOOD DESIGN | — | 3487145 | 2012-06-25 | Suspended | BEVERLY HILLS |
| INSTITUTE FOR GOOD GOVERNMENT AND INCLUSION, INC. | — | 3732798 | 2014-12-11 | Active | OAKLAND |
| INSTITUTE FOR GOVERNMENT RESPONSIBILITY | — | 4258874 | 2019-03-22 | Suspended | LOS ANGELES |
| INSTITUTE FOR GREEN SCIENCE RESEARCH LLC | — | 201703010474 | 2017-01-17 | Suspended | SAN LUIS OBISPO |
| INSTITUTE FOR GYNOCENTRIC STUDIES, INC. | — | 0899805 | 1978-10-12 | Dissolved | |
| INSTITUTE FOR HEAD & NECK SURGERY MEDICAL GROUP, INC. | — | 2769729 | 2005-08-09 | Active | CAMARILLO |
| INSTITUTE FOR HEALING AND JUSTICE IN MEDICINE INC. | — | 4687664 | 2021-01-11 | Active | SAN FRANCISCO |
| INSTITUTE FOR HEALING AND WELLNESS | — | 2580991 | 2004-02-05 | Suspended | SANTA ANA |
| INSTITUTE FOR HEALTH ADVANCEMENT | — | 1719460 | 1993-02-04 | Dissolved | |
| INSTITUTE FOR HEALTH AFFAIRS, INC. | — | 0579478 | 1969-09-05 | Dissolved | |
| INSTITUTE FOR HEALTH AND SOCIO-ECONOMIC POLICY, INC. | — | 1960141 | 1996-01-11 | Suspended | OAKLAND |
| INSTITUTE FOR HEALTH AWARENESS, INC. | — | 2409722 | 2002-04-03 | Suspended | |
| INSTITUTE FOR HEALTH CARE ANALYSIS | — | 1754843 | 1994-12-09 | Dissolved | TORRANCE |
| INSTITUTE FOR HEALTH CARE ECONOMICS AND POLICY RESEARCH, INC. | — | 2055114 | 1997-09-09 | Revoked | NEWPORT BEACH |
| INSTITUTE FOR HEALTH FUTURES, INC. | — | 2002977 | 1997-02-27 | Dissolved | SAN FRANCISCO |
| INSTITUTE FOR HEALTH MANAGEMENT | — | 1091656 | 1981-10-02 | Suspended | |
| INSTITUTE FOR HEALTH MANAGEMENT, INC., A MEDICAL CLINIC | — | 1272670 | 1985-04-10 | Active | PETALUMA |
| INSTITUTE FOR HEALTH POLICY SOLUTIONS | — | 2579820 | 2004-01-20 | Dissolved | WASHINGTON |
| INSTITUTE FOR HEALTH RESOURCE MARKETING, INC. | — | 1493895 | 1991-02-22 | Suspended | EL TORO |
| INSTITUTE FOR HEALTH SCIENCE, INC. | — | 2561906 | 2003-10-22 | Active | COSTA MESA |
| INSTITUTE FOR HEALTH SCIENCES L.L.C. | — | 201800210342 | 2017-12-19 | Dissolved | BALTIMORE |
| INSTITUTE FOR HEALTHCARE ADVANCEMENT | — | 1801893 | 1991-09-25 | Active | ANAHEIM |
| INSTITUTE FOR HEALTHCARE IMPROVEMENT | — | 3198855 | 2009-04-24 | Active | BOSTON |
| INSTITUTE FOR HEALTHFUL LIVING | — | 0894108 | 1978-08-04 | Suspended | |
| INSTITUTE FOR HIGH ACADEMIC ACHIEVEMENT, INC. | — | 2639950 | 2004-06-01 | Dissolved | FONTANA |
| INSTITUTE FOR HIGH QUALITY CARE | — | 3791858 | 2015-06-01 | Active | STEVENSON RACH |
| INSTITUTE FOR HIGH RELIABILITY ORGANIZING | — | 3575965 | 2013-05-31 | Suspended | REDLANDS |
| INSTITUTE FOR HIGHER EDUCATION | — | 2694201 | 2004-12-22 | Dissolved | |
| INSTITUTE FOR HIGHER EDUCATION AND PHILANTHROPY | — | 0842334 | 1978-03-27 | Suspended | |
| INSTITUTE FOR HISPANIC CULTURAL STUDIES | — | 1252061 | 1984-07-13 | Dissolved | LOS ANGELES |
| INSTITUTE FOR HISPANIC DEVELOPMENT | — | 1368312 | 1986-03-14 | Dissolved | |
| INSTITUTE FOR HISTORICAL RESEARCH | — | 1113263 | 1982-05-28 | Suspended | |
| INSTITUTE FOR HOLISTIC MEDICAL RESEARCH | — | 0896393 | 1978-08-31 | Dissolved | |
| INSTITUTE FOR HOLISTIC STUDIES, INC. | — | 1124281 | 1982-10-06 | Dissolved | |
| INSTITUTE FOR HOLOTROPICS, INC. | — | 3455698 | 2012-02-21 | Active | NOVATO |
| INSTITUTE FOR HOMEOWNER EDUCATION AND AWARENESS, INC. | — | 1791455 | 1996-10-01 | Suspended | LOS ANGELES |
| INSTITUTE FOR HORN OF AFRICA STUDIES AND AFFAIRS | — | 3117829 | 2008-12-30 | Suspended | SAN DIEGO |
| INSTITUTE FOR HOUSING POLICY | — | 1282990 | 1985-08-05 | Dissolved | ANAHEIM |
| INSTITUTE FOR HOUSING, GROWTH AND DEVELOPMENT | — | 1641970 | 1989-06-09 | Suspended | SACRAMENTO |
| INSTITUTE FOR HUMAN AFFAIRS | — | 0825911 | 1977-09-13 | Suspended | |
| INSTITUTE FOR HUMAN CREATIVITY | — | 4081781 | 2017-11-07 | Suspended | |
| INSTITUTE FOR HUMAN DEVELOPMENT | — | 2441880 | 2002-07-02 | Dissolved | |
| INSTITUTE FOR HUMAN DEVELOPMENT | — | 0805782 | 1976-12-28 | Dissolved | |
| INSTITUTE FOR HUMAN GROWTH AND AWARENESS | — | 0691790 | 1973-10-23 | Dissolved | SAN JOSE |
| INSTITUTE FOR HUMAN INTERDEPENDENCE | — | 0812146 | 1977-03-23 | Dissolved | |
| INSTITUTE FOR HUMAN PROGRESS, INC. | — | 1443494 | 1988-08-18 | Suspended | LOMITA |
| INSTITUTE FOR HUMAN RELATIONS | — | 0549970 | 1968-07-25 | Suspended | |
| INSTITUTE FOR HUMAN RELATIONS AND DEVELOPMENT | — | 2157414 | 1999-03-04 | Dissolved | LOS ANGELES |
| INSTITUTE FOR HUMAN RESOURCES | — | 4538154 | 2019-12-19 | Suspended | SAN FRANCISCO |
| INSTITUTE FOR HUMAN SERVICES MANAGEMENT, INC. | — | 1664424 | 1990-05-03 | Dissolved | WESTMINSTER |
| INSTITUTE FOR HUMAN SERVICES: RESEARCH, PROGRAM DEVELOPMENT & EVALUATION | — | 0670611 | 1972-12-08 | Suspended | |
| INSTITUTE FOR HUMAN THOUGHT AND ACTION | — | 0732804 | 1975-03-19 | Dissolved | SAN ARDO |
| INSTITUTE FOR HUMAN VIABILITY CORP | — | 3662879 | 2014-04-02 | Active | ESCONDIDO |
| INSTITUTE FOR HUMANE STUDIES | — | 0423198 | 1961-11-10 | Active | |
| INSTITUTE FOR HUMANISTIC LIVING, INC. | — | 0693653 | 1973-11-20 | Suspended | |
| INSTITUTE FOR HUMANISTIC PSYCHOLOGY, INC. | — | 0688998 | 1973-09-12 | Suspended | |
| INSTITUTE FOR IN-FLIGHT RESEARCH | — | 1957053 | 1996-01-08 | Dissolved | MONTEREY |
| INSTITUTE FOR INCREASING INTELLIGENCE, INC. | — | 1098561 | 1981-12-09 | Dissolved | CARMEL |
| INSTITUTE FOR INDEPENDENT INFORMATION TECHNOLOGY PROFESSIONALS, INC. | — | 1196056 | 1987-03-13 | Dissolved | BURLINGAME |
| INSTITUTE FOR INDEPENDENT INFORMATION TECHNOLOGY PROFESSIONALS, LLC | — | 200134110110 | 2001-12-07 | Active | NOVATO |
| INSTITUTE FOR INDEPENDENT SURVIVAL | — | 0984919 | 1980-06-06 | Suspended | |
| INSTITUTE FOR INDIVIDUAL PSYCHOLOGY, INC. | — | 0238780 | 1949-09-02 | Suspended | |
| INSTITUTE FOR INDIVIDUAL THEOLOGY | — | 1893248 | 1994-07-05 | Dissolved | COALINGA |
| INSTITUTE FOR INDIVIDUAL THEOLOGY, INC. | — | 2425433 | 2002-03-20 | Suspended | FRESNO |
| INSTITUTE FOR INDUSTRIAL & APPLIED TECHNOLOGY | — | 3388331 | 2011-06-09 | Suspended | EL CAJON |
| INSTITUTE FOR INDUSTRIAL TECHNOLOGY EDUCATION | — | 3199022 | 2009-05-12 | Dissolved | SAN JUAN CAPISTRANO |
| INSTITUTE FOR INFORMATION AND RESEARCH ON MEXICAN AMERICA | — | 1237199 | 1984-01-23 | Dissolved | BERKELEY |
| INSTITUTE FOR INFORMATION EQUITY AND RESEARCH | — | 2861723 | 2006-03-15 | Dissolved | |
| INSTITUTE FOR INFORMATION INDUSTRY, INC. | — | 1819349 | 1992-04-03 | Dissolved | SANTA CLARA |
| INSTITUTE FOR INFORMATION SCIENCES, INC. | — | 1948258 | 1995-09-12 | Suspended | SAN FRANCISCO |
| INSTITUTE FOR INFORMATION TECHNOLOGY SOLUTIONS (I4ITSOLUTIONS), LLC | — | 201211110029 | 2012-04-19 | Suspended | RICHMOND |
| INSTITUTE FOR INNER PEACE,INC. | — | 3209561 | 2009-05-20 | Active | ENCINO |
| INSTITUTE FOR INNOVATION AND ENTREPRENEURSHIP | — | 2976887 | 2007-04-02 | Dissolved | SAN FRANCISCO |
| INSTITUTE FOR INNOVATIVE JUSTICE | — | 5115063 | 2022-05-18 | Active | WOODLAND HILLS |
| INSTITUTE FOR INNOXATIVE EDUCATION, INC. | — | 0793552 | 1977-03-30 | Suspended | SAN DIEGO |
| INSTITUTE FOR INQUIRY, INC. | — | 2644840 | 2004-04-07 | Suspended | |
| INSTITUTE FOR INSIGHT AND TRANSFORMATION | — | 3352878 | 2010-12-28 | Active | SAN FRANCISCO |
| INSTITUTE FOR INSTRUCTIONAL MANAGEMENT | — | 2994091 | 2008-02-13 | Suspended | ALPINE |
| INSTITUTE FOR INTEGRAL ENNEAGRAM STUDIES, INC. | — | 2949360 | 2007-07-25 | Suspended | SAN FRANCISCO |
| INSTITUTE FOR INTEGRATIVE AND ENERGY MEDICINE | — | 2209553 | 2000-01-21 | Dissolved | IRVINE |
| INSTITUTE FOR INTEGRATIVE MEDICINE & REJUVENATION, INC. | — | 2218360 | 2000-02-11 | Suspended | SAN CLEMENTE |
| INSTITUTE FOR INTEGRATIVE MEDICINE, LLC | — | 201335110043 | 2013-12-16 | Dissolved | VALLEJO |
| INSTITUTE FOR INTEGRATIVE NEUROSCIENCE, INC. | — | 3888172 | 2016-03-21 | Suspended | SAN DIEGO |
| INSTITUTE FOR INTEGRATIVE STUDIES, INC. | — | 1258731 | 1984-10-01 | Dissolved | LOS ANGELES |
| INSTITUTE FOR INTERCULTURAL STUDIES, INC. | — | 0751024 | 1975-07-25 | Active | LOS ANGELES |
| INSTITUTE FOR INTERDISCIPLINARY RESEARCH | — | 1265691 | 1985-01-02 | Active | PASADENA |