The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 16301 | Oilfield Industries | £ 9,854,297 | |
| 16302 | oiu | £ 5,498,037 | |
| 16303 | OJ da Juiceman | £ 109,855 | |
| 16304 | OK Tom | £ 216,929,621 | |
| 16305 | OKFurniture | £ 50,000 | |
| 16306 | OKG Shed | £ -329,334 | |
| 16307 | Oklahoma | £ 50,202,258 | |
| 16308 | OKS 1 PTE LTD | £ 50,000 | |
| 16309 | OKS PTE LTD | £ 2,148,676 | |
| 16310 | OLafa | £ 5,088,982 | |
| 16311 | Oland Ltd | £ 50,000 | |
| 16312 | Olay | £ 326,245,749 | |
| 16313 | Old | £ 1,274,796,310 | |
| 16314 | Old Age | £ 428,870,365 | |
| 16315 | Old Antique | £ 235,800,660 | |
| 16316 | Old Bay | £ 123,534,579 | |
| 16317 | Old Bill | £ 45,792,842 | |
| 16318 | Old Boss | £ 15,094,253 | |
| 16319 | Old Carpet | £ 163,972,008 | |
| 16320 | Old company names | £ 1,212,669,516 | |
| 16321 | old farts | £ 3,542,428,093 | |
| 16322 | Old Feuds | £ 44,696,704 | |
| 16323 | Old Gods Not The New | £ 1,476,632 | |
| 16324 | Old Granny | £ 9,329,769 | |
| 16325 | old lard | £ -7,521,344 | |
| 16326 | old legends | £ 14,735,844 | |
| 16327 | Old men | £ 397,899,239 | |
| 16328 | Old No. 7 | £ 749,759,055 | |
| 16329 | Old people | £ 41,298,004 | |
| 16330 | Old Rocker | £ 416,345,265 | |
| 16331 | Old School | £ 5,514,041 | |
| 16332 | old skool butta | £ 614,087 | |
| 16333 | Old Smoky | £ 622,122,584 | |
| 16334 | Old Socks | £ 144,379,758 | |
| 16335 | Old Spice | £ 652,714,380 | |
| 16336 | old to netro | £ 80,731,925 | |
| 16337 | Old tyres | £ 54,000,053 | |
| 16338 | Old Whiskey | £ 78,899,948 | |
| 16339 | Old Wisteria | £ 51,324,515 | |
| 16340 | Old World Industry | £ 1,734,908 | |
| 16341 | Old World Ventures | £ 50,000 | |
| 16342 | OlDirty | £ 47,991,916 | |
| 16343 | oldschool | £ 125,860,243 | |
| 16344 | Oligarchy | £ 1,027,197,133 | |
| 16345 | Oligarchy inc. | £ 7,116,723 | |
| 16346 | olis | £ 91,036,818 | |
| 16347 | Olivers Imagination | £ 124,320,555 | |
| 16348 | olives | £ 568,111,602 | |
| 16349 | Olives ltd | £ 2,575,542 | |
| 16350 | Ollio Inc. | £ 6,159,098 | |
| 16351 | Ollio2 Inc. | £ -2,232,039 | |
| 16352 | Ollio3 Inc. | £ -680,853 | |
| 16353 | Olrik | £ 22,147,425 | |
| 16354 | Olympia | £ 132,086,320 | |
| 16355 | Olympiazuli | £ 37,752,986 | |
| 16356 | olympic rings | £ 3,084,696,830 | |
| 16357 | Olympics | £ 5,508,747 | |
| 16358 | Olympus | £ 2,084,999,378 | |
| 16359 | OMD | £ 339,034,023 | |
| 16360 | Omega | £ 6,183,955 | |
| 16361 | Omega Indusries | £ 37,799 | |
| 16362 | OmegaFox Inc. | £ 1,266,634 | |
| 16363 | Omens | £ 1,481,298,609 | |
| 16364 | Omerta | £ 1,007,186,123 | |
| 16365 | Omerta Inc. | £ 5,500,096 | |
| 16366 | OMG I Need Help | £ 54,108,048 | |
| 16367 | omission | £ 258,806,447 | |
| 16368 | Omni Consumer Products | £ 32,296,370 | |
| 16369 | Omni Future Corp 1 | £ 855,512,970 | |
| 16370 | omni4 | £ 1,185,151 | |
| 16371 | OmniCorp | £ 5,503,691 | |
| 16372 | Omnifarious | £ 2,360,838,488 | |
| 16373 | Omnificent | £ 2,321,277,749 | |
| 16374 | Omnipotent | £ 2,218,375,349 | |
| 16375 | Omnipresent | £ 2,257,248,277 | |
| 16376 | Omniscient | £ 2,478,385,168 | |
| 16377 | Omnitool | £ 4,640,506 | |
| 16378 | on a stick | £ 13,410 | |
| 16379 | On Industries | £ 1,896,074 | |
| 16380 | On It | £ 59,533,659 | |
| 16381 | On My Mind | £ 87,748,385 | |
| 16382 | ON PATCHWERK | £ 399,366,790 | |
| 16383 | On Patrol | £ 12,607,194 | |
| 16384 | On The Fritz | £ 79,242,996 | |
| 16385 | on the hills | £ 82,126,655 | |
| 16386 | On the move | £ 144,453,102 | |
| 16387 | on the road | £ 405,722,546 | |
| 16388 | on yourself | £ 126,998,452 | |
| 16389 | Once In A Blue Moon | £ 48,317,032 | |
| 16390 | Once Upon a Time | £ 24,760,937 | |
| 16391 | Once Were Warriors | £ 54,754,263 | |
| 16392 | one | £ 341,379,992 | |
| 16393 | One and a Half | £ 8,610,014,000 | |
| 16394 | One Body | £ 7,303,624 | |
| 16395 | One Company | £ 398,709,264 | |
| 16396 | One Company Rule | £ 51,242,256 | |
| 16397 | one dollar company | £ 40,885,349 | |
| 16398 | One Enterprise | £ 5,940,523 | |
| 16399 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 16400 | One gun | £ 1,381,284,458 | |
