| HOSPICIO EN EL HOGAR FE Y ESPERANZA DE PUERTO RICO, INC. | — | 76744 | 1990-10-19 | Active | MANATI |
| HOTEL EL FARO, INC. | — | 75382 | 1990-05-02 | Canceled | AGUADILLA |
| HSEC-CARIBE, INC. | — | 75987 | 1990-07-23 | Canceled | BAYAMON |
| HUMACAO, P.R. CHAPTER #4579 OF AMERICAN ASSOCIATION OF RETIRED PERSONS, INC. | — | 20652 | 1990-08-22 | Canceled | HUMACAO |
| HUMEL CORPORATION | — | 75516 | 1990-05-24 | Active | SAN JUAN |
| IDO UNIFORMS, INC. | — | 76690 | 1990-10-24 | Active | SAN JUAN |
| IFC LIGHTING SERVICE SUPPLY, INC. | — | 76034 | 1990-07-13 | Active | SAN JUAN |
| IGLESIA ALIANZA CRISTIANA Y MISIONERA DE BARRANQUITAS INC. | — | 20346 | 1990-05-18 | Active | BARRANQUITAS |
| IGLESIA ASAMBLEAS DE DIOS CAMINO AL CIELO, INC. | — | 20104 | 1990-03-08 | Active | |
| IGLESIA BAUTISTA BETHEL DEL SUR, INC. | — | 20111 | 1990-03-08 | Active | |
| IGLESIA BAUTISTA DE NAGUABO MONTE DE BENDICION INCORPORADA | — | 20093 | 1990-03-05 | Active | |
| IGLESIA BAUTISTA UNIDA, INC. | — | 20092 | 1990-02-27 | Merged | |
| IGLESIA BAUTISTA VILLAS DE LOIZA, INC. | — | 20424 | 1990-06-21 | Active | PUERTO |
| IGLESIA BETHEL ASAMBLEAS DE DIOS, INC. | — | 20299 | 1990-04-17 | Active | |
| IGLESIA CRISTIANA ALABANZA, INCORPORADA | — | 22085 | 1990-11-13 | Active | |
| IGLESIA CRISTIANA BELLAS PALABRAS DE VIDA, INC. | — | 20963 | 1990-11-29 | Active | |
| IGLESIA CRISTIANA CARISMATICA INDEPENDIENTE SERVIDORES DE CRISTO, INC. | — | 20712 | 1990-09-12 | Active | GUAYAMA |
| IGLESIA CRISTIANA DE AVIVAMIENTO RENOVADA SION, INC. | — | 20026 | 1990-02-08 | Active | TRUJILLO ALTO |
| IGLESIA CRISTIANA DE RESTAURACION DE QUEBRADILLAS, INC | — | 20423 | 1990-06-08 | Active | AGUADILLA |
| IGLESIA CRISTIANA EL DISCIPULO, INC. | — | 20670 | 1990-08-28 | Active | |
| IGLESIA CRISTIANA EL REY VIENE INC. | — | 20186 | 1990-04-02 | Active | BAYAMON |
| IGLESIA CRISTIANA MISIONERA BETESDA, INCORPORADA | — | 19977 | 1990-01-30 | Active | VEGA ALTA |
| IGLESIA CRISTIANA MISIONERA DE AVIVAMIENTO PENTECOSTES, INCORPORADA | — | 21031 | 1990-12-19 | Active | ISABELA |
| IGLESIA CRISTIANA MISIONERA DE MOROVIS, INC. | — | 20952 | 1990-11-26 | Active | MOROVIS |
| IGLESIA CRISTIANA SEGUNDA DE CORINTIOS 5:17 INC. | — | 20059 | 1990-02-11 | Active | |
| IGLESIA CRISTO JUSTICIA DE LOS SIGLOS, INC. | — | 20671 | 1990-08-28 | Active | SECTOR |
| IGLESIA DE CRISTO DE PUERTO RICO, INC. | — | 21039 | 1990-12-27 | Active | RIO PIEDRAS |
| IGLESIA DEL NUEVO TESTAMENTO PENTECOSTAL DE MANATI, INC. | — | 20473 | 1990-06-26 | Active | MANATI |
| IGLESIA EVANGELICA DE AVIVAMIENTO MONTE SION, INC. | — | 20170 | 1990-03-29 | Active | CIDRA |
| IGLESIA EVANGELICA SHALOM DE RIO GRANDE, INC. | — | 20483 | 1990-06-29 | Active | RIO GRANDE |
| IGLESIA MISION CRISTIANA LOGOS INC. | — | 20394 | 1990-05-31 | Active | |
| IGLESIA MISION CRISTIANA SINAI, INC. | — | 20131 | 1990-03-13 | Active | |
| IGLESIA MISIONERA CAMINO DE LA VERDAD INC. | — | 20291 | 1990-04-26 | Active | |
| IGLESIA MISIONERA SENDA DE SANTIDAD, INC. | — | 20164 | 1990-03-27 | Active | MOROVIS |
| IGLESIA PENIEL DEFENSORES DE LA FE CRISTIANA INC. | — | 20992 | 1990-12-12 | Active | SAN JUAN |
| IGLESIA PENTECOSTAL - CRISTO, LA ROCA, INC. | — | 20608 | 1990-08-14 | Active | |
| IGLESIA PENTECOSTAL JOSUE 24:15, CONCILIO LATINOAMERICANO, INC. | — | 20432 | 1990-06-14 | Active | |
| IGLESIA PRESBITERIANA DEL BHARRIO QUEBRADA DE CAMUY, PUERTO RICO, INC. | — | 20314 | 1990-05-14 | Active | CAMUY |
| IGLESIA VIDA BALANCEADA EN CRISTO, INC. | — | 20015 | 1990-02-05 | Active | BAYAMON |
| ILLUMINATION PRODUCTS, INC. | — | 76368 | 1990-08-02 | Active | SAN JUAN |
| IMPRESOS QUINTANA, INC. | — | 77037 | 1990-12-12 | Canceled | |
| INDUSA INDUSTRIAL SUPPLIES, INC. | — | 77027 | 1990-12-07 | Active | GUAYNABO |
| INDUSTRIAL MACHINERY MOVERS, INC. | — | 75360 | 1990-05-01 | Active | BAYAMON |
| INSTRUMENTATION SYSTEMS AND ENGINEERING , INC. | — | 75121 | 1990-03-30 | Canceled | MANATÍ |
| INTELLIGENT SOFTWARE SOLUTIONS CORP (I.S.S. CORP) | — | 77137 | 1990-12-07 | Canceled | SAN JUAN |
| INTERCONTINENTAL FOOD TRADE, CORP. | — | 75006 | 1990-03-20 | Active | HUMACAO |
| INTERCONTINENTAL MARKETING GROUP, INC. | — | 74812 | 1990-03-13 | Active | GUAYNABO |
| INTERCULTURAL CENTER,INC. | — | 74682 | 1990-02-12 | Active | SAN JUAN |
| INTERNATIONAL ARCADES,INC. | — | 76815 | 1990-11-14 | Canceled | SAN JUAN |
| INTERNATIONAL HOME SALES CORPORATION | — | 76924 | 1990-11-20 | Dissolved | GUAYNABO |