The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 15101 | Oil Field | £ 271,568 | |
| 15102 | Oil First | £ 49,880 | |
| 15103 | Oil Inc | £ 1,610,027 | |
| 15104 | Oil Industry | £ 4,441,721 | |
| 15105 | Oil Rigger | £ 2,151,587,047 | |
| 15106 | Oilfield Industries | £ 9,854,297 | |
| 15107 | oiu | £ 5,498,037 | |
| 15108 | OJ da Juiceman | £ 109,855 | |
| 15109 | OK Tom | £ 213,436,455 | |
| 15110 | OKFurniture | £ 50,000 | |
| 15111 | OKG Shed | £ -329,334 | |
| 15112 | OKS 1 PTE LTD | £ 50,000 | |
| 15113 | OKS PTE LTD | £ 2,148,676 | |
| 15114 | OLafa | £ 5,088,982 | |
| 15115 | Oland Ltd | £ 50,000 | |
| 15116 | Olay | £ 326,245,749 | |
| 15117 | Old | £ 982,371,465 | |
| 15118 | Old Age | £ 428,870,365 | |
| 15119 | Old Bay | £ 123,534,579 | |
| 15120 | Old Bill | £ 45,792,842 | |
| 15121 | Old Boss | £ 15,094,253 | |
| 15122 | Old Carpet | £ 163,972,008 | |
| 15123 | Old company names | £ 375,755,312 | |
| 15124 | old farts | £ 3,542,428,093 | |
| 15125 | Old Feuds | £ 44,696,704 | |
| 15126 | Old Granny | £ 9,329,769 | |
| 15127 | old lard | £ -7,521,344 | |
| 15128 | old legends | £ 14,735,844 | |
| 15129 | Old men | £ 397,899,239 | |
| 15130 | Old No. 7 | £ 749,759,055 | |
| 15131 | Old people | £ 41,298,004 | |
| 15132 | Old Rocker | £ 416,345,265 | |
| 15133 | Old School | £ 5,514,041 | |
| 15134 | old skool butta | £ 614,087 | |
| 15135 | Old Smoky | £ 622,122,584 | |
| 15136 | Old Socks | £ 144,379,758 | |
| 15137 | Old Spice | £ 439,275,623 | |
| 15138 | old to netro | £ 80,731,925 | |
| 15139 | Old tyres | £ 54,000,053 | |
| 15140 | Old Whiskey | £ 78,899,948 | |
| 15141 | Old Wisteria | £ 51,324,515 | |
| 15142 | Old World Industry | £ 1,734,908 | |
| 15143 | Old World Ventures | £ 50,000 | |
| 15144 | OlDirty | £ 47,991,916 | |
| 15145 | oldschool | £ 121,302,173 | |
| 15146 | Oligarchy | £ 895,586,368 | |
| 15147 | Oligarchy inc. | £ 7,116,723 | |
| 15148 | olis | £ 91,036,818 | |
| 15149 | Olivers Imagination | £ 124,320,555 | |
| 15150 | olives | £ 568,111,602 | |
| 15151 | Olives ltd | £ 2,575,542 | |
| 15152 | Ollio Inc. | £ 6,159,098 | |
| 15153 | Ollio2 Inc. | £ -2,232,039 | |
| 15154 | Ollio3 Inc. | £ -680,853 | |
| 15155 | Olrik | £ 22,147,425 | |
| 15156 | Olympia | £ 112,782,553 | |
| 15157 | olympic rings | £ 3,084,696,830 | |
| 15158 | Olympics | £ 5,508,747 | |
| 15159 | Olympus | £ 2,084,999,378 | |
| 15160 | OMD | £ 290,660,620 | |
| 15161 | Omega | £ 6,183,955 | |
| 15162 | Omega Indusries | £ 37,799 | |
| 15163 | OmegaFox Inc. | £ 1,266,634 | |
| 15164 | Omens | £ 1,168,356,240 | |
| 15165 | Omerta | £ 1,007,186,123 | |
| 15166 | Omerta Inc. | £ 5,500,096 | |
| 15167 | omission | £ 19,080,962 | |
| 15168 | Omni | £ 26,585,058 | |
| 15169 | Omni Consumer Products | £ 32,296,370 | |
| 15170 | Omni Future Corp 1 | £ 855,512,970 | |
| 15171 | omni4 | £ 1,185,151 | |
| 15172 | Omnia | £ 29,796,207 | |
| 15173 | OmniCorp | £ 5,503,691 | |
| 15174 | Omnifarious | £ 2,360,838,488 | |
| 15175 | Omnificent | £ 2,321,277,749 | |
| 15176 | Omnipotent | £ 2,218,375,349 | |
| 15177 | Omnipresent | £ 2,257,248,277 | |
| 15178 | Omniscient | £ 2,478,385,168 | |
| 15179 | Omnitool | £ 4,640,506 | |
| 15180 | on a stick | £ 13,410 | |
| 15181 | On Industries | £ 1,896,074 | |
| 15182 | On It | £ 59,533,659 | |
| 15183 | On My Mind | £ 87,748,385 | |
| 15184 | ON PATCHWERK | £ 399,366,790 | |
| 15185 | On Patrol | £ 5,505,639 | |
| 15186 | On The Fritz | £ 79,242,996 | |
| 15187 | On the move | £ 144,453,102 | |
| 15188 | on the road | £ 405,722,546 | |
| 15189 | on yourself | £ 126,998,452 | |
| 15190 | Once Upon a Time | £ 24,760,937 | |
| 15191 | Once Were Warriors | £ 54,754,263 | |
| 15192 | one | £ 341,379,992 | |
| 15193 | One and a Half | £ 8,610,014,000 | |
| 15194 | One Company | £ 398,709,264 | |
| 15195 | one dollar company | £ 40,885,349 | |
| 15196 | One Enterprise | £ 5,940,523 | |
| 15197 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 15198 | One gun | £ 1,381,284,458 | |
| 15199 | One Hit Wonder | £ 30,087,678 | |
| 15200 | One Hundred Netro Bucks | £ 132,828,467 | |
