| CLINICA CONTROL DE PESO DE HORMIGUEROS INC. | — | 157099 | 2005-10-17 | Canceled | HORMIGUEROS |
| CLINICA DE MEDICINA DE FAMILIA Y MEDICINA DERMO-ESTETICA C.S.P. | — | 3539 | 2005-06-21 | Canceled | BAYAMON |
| CLINICA DE MEDICINA ESTETICA DR. EDWIN ARROYO ROSADO C.S.P. | — | 3562 | 2005-07-01 | Canceled | CAGUAS |
| CLINICA DE MEDICINA PREVENTIVA Y SONOGRAFIA GUAYAMA PSC | Retail trade | 3688 | 2005-09-16 | Canceled | GUAYAMA |
| CLINICA DE SALUD INTEGRAL FAMILIAR DE TOA BAJA INC. | — | 152704 | 2005-05-11 | Canceled | LEVITTOWN TOA BAJA |
| CLINICA DE TERAPIA FISICA Y REHABILITACION, C.S.P. | — | 3310 | 2005-02-05 | Active | NAGUABO |
| CLINICA DE TERAPIA PASITOS DEL SABER, CSP. | — | 3757 | 2005-11-07 | Active | ARECIBO |
| CLINICA DENTAL CALIFORNIA CSP. | — | 3616 | 2005-07-29 | Active | QUEBRADILLAS |
| CLINICA DENTAL CALIFORNIA, INC. | — | 154363 | 2005-07-06 | | QUEBRADILLAS |
| CLINICA DENTAL DE LA FAMILIA, C.S.P. | — | 3251 | 2005-01-12 | Active | SANTA ISABEL |
| CLINICA DENTAL FAMILIAR CIDREÑA, C.S.P. | — | 3577 | 2005-07-12 | Active | CIDRA |
| CLINICA DENTAL INTEGRAL, INC. | — | 150000 | 2005-02-07 | Canceled | |
| CLINICA DENTAL LA MONTAÑA II, INC. | — | 149168 | 2005-01-11 | Active | NARANJITO |
| CLINICA DRA GORBEA, P.S.C. | — | 3681 | 2005-09-13 | Canceled | HATO REY |
| CLINICA ESTETICA Y SALON DE BELLEZA ANA RITA, INC. | — | 152732 | 2005-05-11 | Dissolved | SAN JUAN |
| CLINICA MEDICA DRA. ORTIZ - LOPEZ, INC. | — | 155088 | 2005-07-11 | Canceled | SALINAS |
| CLINICA OFTALMICA QUADRANGLE, P.S.C. | — | 3640 | 2005-08-17 | Active | CAGUAS |
| CLINICA PSIQUIATRICA DE MANATI, INC. | — | 151358 | 2005-03-23 | Canceled | MANATI |
| CLINICA QUIROPRÁCTICA JARROT SIERRA C.S.P. | — | 3317 | 2005-02-08 | Dissolved | SAN JUAN |
| CLINICAL NEUROLOGY SERVICE, P.S.C. | — | 3855 | 2005-11-18 | Canceled | BAYAMON |
| CLINIQUE LABORATORIES, LLC | — | 224 | 2005-12-14 | Active | HATO REY |
| CLM 80 CORP. | — | 47376 | 2005-05-11 | Dissolved | SAN JUAN |
| CLM 85 INC. | — | 47110 | 2005-04-21 | Canceled | SAN JUAN |
| CLOCKWISE DEVELOPMENT INC. | — | 151603 | 2005-04-01 | Canceled | SAN JUAN |
| CLODA, INC. | — | 157388 | 2005-10-26 | Canceled | CAROLINA |
| CLOQUELL & MIRANDA ADMINISTRATIVE SERVICES, INC. | — | 149364 | 2005-01-18 | Canceled | CAGUAS |
| CLOSER LOOK RESEARCH CORP. | — | 149718 | 2005-01-28 | Dissolved | YAUCO |
| CLOTH CLEANING COMPANY INC. | — | 153625 | 2005-06-10 | Canceled | GUAYNABO |
| CLOUD NINE MASSAGE INC. | — | 152496 | 2005-05-04 | Canceled | SAN JUAN |
| CLUB AJEDREZ SAN JUAN CORP. | — | 48414 | 2005-11-04 | Canceled | TRUJILLO ALTO |
| CLUB AMIGOS HACIENDA CANDELERO, INC. | — | 47965 | 2005-08-31 | Canceled | SAN JUAN |
| CLUB BALONCESTO FEMENINO DEL NORTE, INC | — | 48196 | 2005-09-09 | Canceled | ARECIBO |
| CLUB BELLO AMANECER EDAD DORADA INC. | — | 46626 | 2005-02-14 | Dissolved | SAN JUAN |
| CLUB C.B. LOS AMIGOS, INC. | — | 47551 | 2005-06-27 | Canceled | CIALES |
| CLUB CALA DE PALMAS PROPERTY OWNERS ASSOCIATION, INC. | — | 48546 | 2005-11-23 | Canceled | BARCELONETA |
| CLUB CICLISTAS CAPITAL DEL SOL INC. | — | 47291 | 2005-05-18 | Canceled | LUQUILLO |
| CLUB DE BALONCESTO DE CIDRA, INC. | — | 47682 | 2005-07-12 | Canceled | CIDRA |
| CLUB DE BALONCESTO DE LEVITTOWN INC. | — | 47605 | 2005-07-01 | Canceled | LEVITTOWN TOA BAJA |
| CLUB DE BALONCESTO TOA BAJA LLANEROS INC. | — | 47887 | 2005-08-16 | Canceled | TOA BAJA |
| CLUB DE BILLAR LOS BROTHERS' INC. | — | 48630 | 2005-12-09 | Canceled | CAYEY |
| CLUB DE LEONES DE MARICAO, INC. | — | 48645 | 2005-12-05 | Canceled | MARICAO |
| CLUB DE LEONES HORMIGUEROS VALLE HERMOSO INC | — | 47866 | 2005-07-05 | Canceled | HORMIGUEROS |
| CLUB DE SOCCER ROBERTO COFRESI, CORP. | — | 46491 | 2005-01-29 | Active | CABO ROJO |
| CLUB DE VELERO NATIVO DE CANGREJO INC. | — | 47444 | 2005-06-09 | Dissolved | ARROYO |
| CLUB DENBOW, INC. | — | 158182 | 2005-11-29 | Canceled | SAN JUAN |
| CLUB DEPORTIVO DE FUTBOL GUAYAMES INC. | — | 48877 | 2005-05-27 | Active | GUAYAMA |
| CLUB DEPORTIVO DE SAN SEBASTIAN, INC. | — | 46502 | 2005-01-31 | Canceled | SAN SEBASTIAN |
| CLUB DEPORTIVO FLORENCIO CORP. | — | 47649 | 2005-07-08 | Canceled | FAJARDO |
| CLUB DOMINO LOS ENCHUMBAOS, INC | — | 48473 | 2005-08-23 | Canceled | NAGUABO |
| CLUB EDUCATIVO HISTÓRICO DE JÓVENES Y NÑOS INC. | — | 47563 | 2005-06-28 | Dissolved | CIDRA |