| ORLEANS COTTON ROPE AND MANUFACTURING CO. | — | 00O00010D | 1900-01-01 | Inactive | NEW ORLEANS |
| ORLEANS MANUFACTURING COMPANY | — | 00200410D | 1900-01-01 | Merged | NEW ORLEANS |
| ORR & LAUBENHEIMER COMPANY, LTD. | — | 00200170D | 1900-01-01 | Inactive | NEW ORLEANS |
| OTIS MANUFACTURING COMPANY | — | 00600550D | 1900-01-01 | Inactive | NEW ORLEANS |
| P. L. RENOUDET CYPRESS CO. LIMITED | — | 00700260D | 1900-01-01 | Inactive | LISTED NEW IBERIA |
| P. U. SIMONEAUX SONS & CO., LTD. | — | 00700050D | 1900-01-01 | Inactive | NAPOLEONVILLE |
| PALFREY-RODD-PURSELL CO., LTD. | — | 01000070D | 1900-01-01 | Inactive | NEW ORLEANS |
| PARHAM MERCANTILE COMPANY, LIMITED | — | 00500330D | 1900-01-01 | Inactive | VIDALIA |
| PELICAN LUMBER COMPANY, LTD. | — | 01200700D | 1900-07-21 | Inactive | SHREVEPORT |
| PEOPLE'S INTER-NATIONAL INVESTMENT AND LOAN ASSOCIATION | — | 00P00020H | 1900-01-01 | Active | |
| PEOPLES BANK | — | 00300030B | 1900-01-01 | Active | |
| PEOPLES SAVINGS BANK | — | 00600040B | 1900-01-01 | Active | |
| PEOPLES TOBACCO COMPANY, LTD. | — | 00700550D | 1900-01-01 | Inactive | NEW ORLEANS |
| PHOENIX FURNITURE CONCERN, LTD. | — | 01200440D | 1900-04-09 | Inactive | NEW ORLEANS |
| PHOENIX REAL ESTATE COMPANY, LTD. | — | 01200070D | 1900-01-27 | Inactive | LAKE CHARLES |
| PLANTERS CRESCENT OIL CO. | — | 00P00030D | 1900-01-01 | Inactive | NEW ORLEANS |
| PLANTERS RICE MILLING COMPANY, LTD. | — | 01200560D | 1900-05-19 | Inactive | NEW ORLEANS |
| POWELL BROTHERS & SANDERS CO., LTD. | — | 01400320D | 1900-10-22 | Inactive | LEESVILLE |
| PRATER GROCERY COMPANY, LIMITED | — | 01400180D | 1900-09-16 | Inactive | LAKE CHARLES |
| R. MCWILLIAMS, LIMITED | — | 00500120D | 1900-01-01 | Inactive | NEW ORLEANS |
| RAMA TRADING COMPANY, LTD. | — | 00900030D | 1900-01-01 | Inactive | NEW ORLEANS |
| RAMOS LUMBER COMPANY, LTD. | — | 00500130D | 1900-01-01 | Inactive | RAMOS |
| RAPIDES AGENCY, LIMITED | — | 01000710D | 1900-01-16 | Inactive | NEW ORLEANS |
| RED RIVER AND MISSISSIPPI RAIL ROAD COMPANY | — | 00R00010D | 1900-01-01 | Inactive | SHREVEPORT |
| RED RIVER TELEPHONE COMPANY | — | 00500090D | 1900-01-01 | Inactive | SHREVEPORT |
| RED STAR MERCANTILE COMPANY, LTD. | — | 04700620D | 1900-01-01 | Inactive | LOGANSPORT |
| REGARD GIN COMPANY, LTD. | — | 00700640D | 1900-01-01 | Inactive | MANSURA |
| REX PHARMACAL COMPANY, LIMITED | — | 00600130D | 1900-01-01 | Inactive | NEW ORLEANS |
| RICHARDSON & MAY LAND & PLANTING COMPANY, LIMITED | — | 00400120D | 1900-01-01 | Inactive | NEW ORLEANS |
| RIVERSIDE IRRIGATION COMPANY, LIMITED | — | 00700190D | 1900-01-01 | Active | SHREVEPORT |
| ROCHEBLAVE STREET MARKET CO., LTD. | — | 00700230D | 1900-01-01 | Inactive | NEW ORLEANS |
| ROLLER CANAL COMPANY, LTD. | — | 01200570D | 1900-06-19 | Inactive | LISTED CROWLEY |
| ROSENFIELD DRY GOODS COMPANY, LTD. | — | 00400280D | 1900-01-01 | Inactive | BATON ROUGE |
| ROSEPINE LUMBER COMPANY, LTD. | — | 01200120D | 1900-02-08 | Inactive | ROSEPINE |
| ROTH DRUG COMPANY, LIMITED | — | 00500400D | 1900-01-01 | Inactive | THIBODAUX |
| ROY BRICK YARD COMPANY LIMITED | — | 00R00030D | 1900-01-01 | Inactive | CHALMETTE |
| RUSTON STATE BANK | — | 01100110B | 1900-09-01 | Inactive | |
| S. HERNSHEIM BROS. & COMPANY, LIMITED | — | 00200180D | 1900-01-01 | Inactive | NEW ORLEANS |
| SAND SPUR LUMBER COMPANY, LTD. | — | 01200280D | 1900-03-16 | Inactive | COLFAX |
| SARAH RAILROAD COMPANY | — | 01000300D | 1900-01-01 | Inactive | NEW IBERIA |
| SARRAZIN TOBACCO CO., LTD. | — | 00S00040D | 1900-01-01 | Inactive | NEW ORLEANS |
| SCHAEFER-GAIENNIE COMPANY, LTD. | — | 01000200D | 1900-01-01 | Inactive | NEW ORLEANS |
| SCHWARTZ & ISAACS COMPANY, LTD. | — | 01500190D | 1900-04-12 | Inactive | NEW ORLEANS |
| SCHWARTZ FOUNDRY COMPANY, LTD. | — | 01000460D | 1900-01-01 | Inactive | NEW ORLEANS |
| SEGURA SUGAR COMPANY, LTD. | — | 00S00060D | 1900-01-01 | Inactive | NEW ORLEANS |
| SHAMROCK STORE, LTD. | — | 00500340D | 1900-01-01 | Inactive | VIDALIA |
| SHREVEPORT & RED RIVER VALLEY RAILWAY CO. | — | 00500020D | 1900-01-01 | Inactive | SHREVEPORT |
| SHREVEPORT AND ARKANSAS RAILWAY CO. | — | 00S00050D | 1900-01-01 | Inactive | SHREVEPORT |
| SHREVEPORT BELT RAILWAY COMPANY | — | 00S00090D | 1900-01-01 | Inactive | SHREVEPORT |
| SHREVEPORT COMPRESS & WAREHOUSE CO. | — | 01400370D | 1900-10-31 | Inactive | SHREVEPORT |