| CHILD CARE CONSULTANTS, INC. | — | 442645 | 1901-01-01 | Dissolved | CONVERSION |
| CHILLICOTHE OHIO CHAMBER OF COMMERCE COMPANY | — | 31186 | 1901-01-01 | Dissolved | CHILLICOTHE |
| CHRIST'S EVANGELICAL LUTHERAN CHURCH OF CAMBRIDGE OHIO | — | 14009 | 1901-10-09 | Active | CAMBRIDGE |
| CHRIST, THE PRINCE OF PEACE, UNITED METHODIST CHURCH OF BEVIS, HAMILTON COUNTY, OHIO | — | 13773 | 1901-04-15 | Active | |
| CHRISTIAN SCIENCE SOCIETY | — | 14495 | 1901-08-02 | Canceled | PORTSMOUTH |
| CINCINNATI & HAMMOND SPRING COMPANY | — | 82949 | 1901-05-02 | Dissolved | CONVERSION |
| CINCINNATI COLLEGE OF MEDICINE AND SUGERY | — | 58362 | 1901-01-01 | Dissolved | CINCINNATI |
| CINCINNATI COUNCIL NO. 2, UNITED COMMERCIAL TRAVELERS OF AMERICA | — | 16018 | 1901-11-18 | Active | CINCINNATI |
| CINCINNATI FUND,INCORPORATED | — | 203111 | 1901-01-01 | Dissolved | CINCINNATI |
| CLAUDE P. HERMAN, ATTORNEY AT LAW, CO., L.P.A. | — | 441017 | 1901-01-01 | Dissolved | |
| CLEVELAND ARCHITECTURAL CLUB | — | 14214 | 1901-08-28 | Canceled | CLEVELAND |
| CLEVELAND AVENUE MEDICAL CENTER, INC. | — | 407136 | 1901-01-01 | Canceled | CONVERSION |
| CLEVELAND GAS BURNER AND IRON COMPANY | — | 53326 | 1901-01-01 | Dissolved | CLEVELAND |
| CLINTON LODGE KNIGHTS OF PYTHIAS #299 | — | 14059 | 1901-01-11 | Canceled | HAMDEN |
| COLONIAL DISTILLERY COMPANY | — | 82912 | 1901-10-09 | Dissolved | CONVERSION |
| COLP PROPERTIES, INC. | — | 15910 | 1901-04-05 | Dissolved | FINDLAY |
| COLUMBIA CHEMICAL COMPANY | — | 48251 | 1901-03-20 | Dissolved | |
| COLUMBUS DRY GOODS COMPANY | — | 82911 | 1901-11-22 | Dissolved | CONVERSION |
| COLUMBUS GLOVE COMPANY | — | 82945 | 1901-07-19 | Dissolved | |
| COMREZ INVESTMENTS, INC. | — | 309082 | 1901-01-01 | Canceled | DAYTON |
| CONSOLIDATED BOTTLING COMPANY | — | 13925 | 1901-09-20 | Dissolved | LIMA |
| CONSUMERS SAVINGS INC | — | 113395 | 1901-01-01 | Dissolved | CINCINNATI |
| CONSUMERS' ICE AND FUEL COMPANY | — | 14051 | 1901-05-13 | Dissolved | SANDUSKY |
| CONTINENTAL COAL COMPANY | — | 82913 | 1901-02-10 | Dissolved | AS |
| COURT JOSEPH MAJLATH FIRST HUNGARIAN SICK, BENEVOLENT AND BURIAL SOCIETY | — | 14053 | 1901-07-16 | Canceled | CONNEAUT HARBOR |
| CROSS, CURRY, DE WEAVER, RANDALL, AND ASSOCIATES, INC. | — | 396728 | 1901-01-01 | Canceled | Conversion |
| CUMMING, BANNISTER, IZENSON & KINNEY, CO., L.P.A. | — | 438399 | 1901-01-01 | Canceled | |
| D. J. FRITZ, M. D., INC. | — | 427944 | 1901-01-01 | Dissolved | CONVERSION |
| D. O. SURGICAL GROUP, INC. | — | 419256 | 1901-01-01 | Canceled | CONVERSION |
| DANA P. ARNEMAN, D.O., INC. | — | 414880 | 1901-01-01 | Canceled | CONVERSION |
| DANIEL D. TURNER & ASSOCIATES, INC. | — | 438213 | 1901-01-01 | Canceled | CONVERSION |
| DANIEL VERNE, D.D.S. & CHARLES A. BABBUSH, D.D.S., INC. | — | 433605 | 1901-01-01 | Canceled | |
| DAVID R. MC CRACKEN, D.D.S., M.S., INC. | — | 415649 | 1901-01-01 | Canceled | Conversion |
| DAVIS AND HANDELMAN CO., L. P. A. | — | 426294 | 1901-01-01 | Dissolved | |
| DAVIS SEWING MACHINE COMPANY | — | 94673 | 1901-01-01 | Dissolved | |
| DCC LUMBER, INC. | — | 14295 | 1901-06-14 | Dissolved | WOOSTER |
| DELATUS E. BROWN, M.D., INC. | — | 394699 | 1901-01-01 | Dissolved | Conversion |
| DEMETRIO PERALTA, M. D., INC. | — | 416903 | 1901-01-01 | Dissolved | CONVERSION |
| DENNIS G. HEASLEY & ASSOCIATES, INC. | — | 4453103 | 1901-01-01 | Canceled | CONVERSION |
| DIAGNOSTIC MEDICAL IMAGING, INC., P.C. | — | 405102 | 1901-01-01 | Canceled | BEACHWOOD |
| DOCTOR JOSEPH R. KASA, INC. | — | 398602 | 1901-01-01 | Canceled | Conversion |
| DR. ARTHUR H. SVEDBERG & ASSOCIATES, INC. | — | 412383 | 1901-01-01 | Canceled | CONVERSION |
| DR. ARTHUR P. HOLSTEIN, M.D., INC. | — | 433582 | 1901-01-01 | Canceled | CONVERSION |
| DR. BERNAT AND DR. BADJATIA, INC. | — | 416374 | 1901-01-01 | Dissolved | |
| DR. CARL L. ARMSTRONG, INC. | — | 405235 | 1901-01-01 | Canceled | CONVERSION |
| DR. ERNEST D. STOKIEN, INC. | — | 424032 | 1901-01-01 | Dissolved | SHAKER HEIGHTS |
| DR. EUGENE R. BENEDETTO, INC. | — | 305196 | 1901-01-01 | Dissolved | CONVERSION |
| DR. EUGENE STADTLER, D.D.S., INC. | — | 413368 | 1901-01-01 | Canceled | |
| DR. JACK L. MAFFETT, INC. | — | 412250 | 1901-01-01 | Dissolved | CONVERSION |
| DR. JAMES M. GLENN ORAL SURGEON, INC. | — | 438088 | 1901-01-01 | Dissolved | Conversion |