| CENTRAL COOPERATIVA DE VIAJES (MUNDICOOP TRAVEL & TOURS) | — | 497 | 1998-01-28 | Canceled | PUERTO |
| CENTRAL MAINE POWER COMPANY | — | 10707 | 1998-07-29 | Canceled | SAN JUAN SAN JUAN |
| CENTRAL PARK INC. | — | 103012 | 1998-06-04 | Canceled | SAN JUAN |
| CENTRO CARDIOVASCULAR AMBULANCE SERVICES, INC. | — | 102710 | 1998-04-14 | Canceled | MANATI |
| CENTRO COMUNITARIO RVDA. INES J. FIGUEROA, INC. | — | 30839 | 1998-07-16 | Active | SAN JUAN |
| CENTRO CULTURAL DE MOCA INC. | — | 30838 | 1998-03-13 | Canceled | MOCA |
| CENTRO DE ACCION AMBIENTAL, INC. | — | 30424 | 1998-02-04 | Canceled | |
| CENTRO DE APRENDIZAJE INDIVIDUALIZADO INC. | — | 31640 | 1998-11-12 | Active | SAN JUAN |
| CENTRO DE CUIDADO AMOR, INC. | — | 33441 | 1998-08-13 | Active | BARRANQUITAS |
| CENTRO DE CUIDADO DIURNO QUERUBINES DE DIOS INC. | — | 31897 | 1998-08-12 | Canceled | ARROYO |
| CENTRO DE CUIDADO INFANTIL CHIQUILANDIA INC. | — | 30972 | 1998-04-17 | Canceled | PONCE |
| CENTRO DE CUIDADO PEDIATRICO, CSP | — | 712 | 1998-07-30 | Canceled | SAN JUAN |
| CENTRO DE DESARROLLO INFANTIL A E I O U, INC. | — | 102376 | 1998-06-10 | Canceled | GUAYNABO |
| CENTRO DE LA COMUNIDAD GAI INC. | — | 31453 | 1998-07-01 | Canceled | TOA BAJA |
| CENTRO DE NIÑOS Y ADULTOS EN MOVIMIENTO (CENAM), INC. | — | 101162 | 1998-05-08 | Canceled | |
| CENTRO DE REHABILITACION FISICA, OCUPACIONAL Y DEL HABLA, INC. | — | 10835 | 1998-10-28 | Canceled | SAN JUAN |
| CENTRO DE SERVICIOS COMUNITARIOS VIDA PLENA, INC. | — | 30828 | 1998-03-30 | Active | SAN JUAN |
| CENTRO DE TERAPIA FÍSICA RENACER C.S.P. | — | 559 | 1998-02-18 | Active | HATILLO |
| CENTRO DE TERAPIA INTEGRAL CRECEMOS, CSP | — | 573 | 1998-06-10 | Active | VEGA ALTA |
| CENTRO DEAMBULANTES CRISTO POBRE, INC. | — | 32137 | 1998-04-16 | Active | PONCE |
| CENTRO DENTAL MONSERRATE, C.S.P. | — | 759 | 1998-12-15 | Dissolved | CAROLINA |
| CENTRO DERMATOLOGICO LAS AMERICAS, INC. | — | 101982 | 1998-09-11 | Dissolved | HATO REY |
| CENTRO ESPECIALIZADO EN LA SALUD S.S.V.P., INC. | — | 106250 | 1998-10-28 | Canceled | |
| CENTRO FISIATRICO TORRES, INC. | — | 102838 | 1998-06-29 | Canceled | CAGUAS |
| CENTRO INFANTIL LITTLE ANGELS INC. | — | 33400 | 1998-10-22 | Dissolved | PONCE |
| CENTRO JUVENIL SAN JUAN BOSCO DIOCESIS DE MAYAGÜEZ, INC. | — | 31623 | 1998-11-02 | Active | |
| CENTRO MEDICINA INTEGRAL CIDRA, CSP | — | 592 | 1998-08-28 | Canceled | CIDRA |
| CENTRO MEDICO SALINAS, INC. | — | 101150 | 1998-05-14 | Active | SALINAS |
| CENTRO MISIONERO INTERNACIONAL, INC. | — | 31066 | 1998-09-02 | Canceled | |
| CENTRO MUJER Y NUEVA FAMILIA, INC. | — | 30556 | 1998-02-13 | Canceled | BARRANQUITAS |
| CENTRO PARA PROBLEMAS DE APRENDIZAJE INC. | — | 102727 | 1998-07-24 | Active | SANTURCE |
| CENTRO PLASTICO, INC. | — | 104820 | 1998-10-01 | Active | SAN JUAN |
| CENTRO REFORMA PARA SERVICIOS MEDICOS 2985 C.S.P. | — | 682 | 1998-12-14 | Canceled | CAROLINA |
| CENTRO UROLOGICO DEL OESTE, C.S.P. | — | 686 | 1998-07-23 | Dissolved | MAYAGUEZ |
| CENTURY SMALL BUSINESS SOLUTIONS, INC. | — | 102879 | 1998-07-22 | Dissolved | GUAYNABO |
| CEPH INTERNATIONAL CORPORATION | — | 100181 | 1998-01-22 | Active | BAYAMON |
| CESAR H. TRABANCO DE LA CRUZ MD, P.S.C. | — | 625 | 1998-04-02 | Active | PONCE |
| CESAR MUÑIZ & CO., P.S.C. | — | 569 | 1998-07-16 | Active | SAN JUAN |
| CESAR MUÑIZ & COMPANY PUBLIC ACCOUNTING SERVICES, P.S.C. | — | 569 | 1998-07-16 | | SAN JUAN |
| CESAR SANTIAGO ENTERTAINMENT CORP. | — | 100969 | 1998-01-14 | Active | AGUADILLA |
| CH2M HILL , INC. | — | 10554 | 1998-02-18 | Active | San Juan |
| CHALLENGE CONSTUCTION CORP. | — | 102978 | 1998-09-04 | Canceled | PONCE |
| CHAMP INC. | — | 102010 | 1998-06-12 | Canceled | SAN JUAN |
| CHAPEL & ASSOCIATES, INC. | — | 103724 | 1998-08-27 | Active | SAN JUAN |
| CHAPMAN AND MARTY BONDING COMPANY, CORP. | — | 103660 | 1998-12-30 | Canceled | PONCE |
| CHARITO DELGADO INTERIOR DESIGNER, INC. | — | 101846 | 1998-03-25 | Active | SAN JUAN |
| CHENELIZ CONVENTION CENTER, INC. | — | 102269 | 1998-11-10 | Active | SAN SEBASTIAN |
| CHESSO INC. | — | 102857 | 1998-01-08 | Canceled | SAN JUAN |
| CHICO'S FAS, INC. | — | 10544 | 1998-04-21 | Active | San Juan |
| CHINITO NAILS, INC. | — | 104855 | 1998-08-19 | Dissolved | ISLA VERDE |