The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 14101 | olympic rings | £ 3,084,696,830 | |
| 14102 | Olympics | £ 5,508,747 | |
| 14103 | Olympus | £ 2,174,499,314 | |
| 14104 | Omega | £ 6,183,955 | |
| 14105 | Omega Indusries | £ 37,799 | |
| 14106 | OmegaFox Inc. | £ 1,266,634 | |
| 14107 | Omelette | £ 10,061,528 | |
| 14108 | Omens | £ 48,546,685 | |
| 14109 | Omerta | £ 1,007,186,123 | |
| 14110 | Omerta Inc. | £ 5,500,096 | |
| 14111 | Omni | £ 26,585,058 | |
| 14112 | Omni Consumer Products | £ -23,968,848 | |
| 14113 | omni4 | £ 1,185,151 | |
| 14114 | Omnia | £ 29,796,207 | |
| 14115 | Omnifarious | £ 1,274,881,112 | |
| 14116 | Omnificent | £ 1,299,237,242 | |
| 14117 | Omnipotent | £ 1,207,828,452 | |
| 14118 | Omnipresent | £ 1,239,699,203 | |
| 14119 | Omniscient | £ 1,312,936,122 | |
| 14120 | Omnitool | £ 4,640,506 | |
| 14121 | on a stick | £ 13,410 | |
| 14122 | On all you Candyass | £ 69,045,286 | |
| 14123 | On Industries | £ 1,896,074 | |
| 14124 | On It | £ 59,533,659 | |
| 14125 | On My Mind | £ 87,748,385 | |
| 14126 | On Patrol | £ 1,532,343 | |
| 14127 | On The Fritz | £ 79,242,996 | |
| 14128 | On the move | £ 119,554,833 | |
| 14129 | on the road | £ 405,722,546 | |
| 14130 | once | £ -263,290 | |
| 14131 | Once Said | £ 4,848,853 | |
| 14132 | Once Upon a Time | £ 24,760,937 | |
| 14133 | Once Were Warriors | £ 54,754,263 | |
| 14134 | one | £ 341,379,992 | |
| 14135 | One and a Half | £ 8,610,014,000 | |
| 14136 | One Company | £ 398,709,264 | |
| 14137 | one dollar company | £ 40,885,349 | |
| 14138 | One Enterprise | £ 5,940,523 | |
| 14139 | One Eye Morty | £ 57,745,189 | |
| 14140 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 14141 | One gun | £ 613,520,604 | |
| 14142 | one hand clapping | £ 196,738,013 | |
| 14143 | One Hit Wonder | £ 30,087,678 | |
| 14144 | One Hundred Netro Bucks | £ 132,828,467 | |
| 14145 | One Insane Rastaman | £ 273,250,880 | |
| 14146 | one love | £ 3,838,898 | |
| 14147 | One Man | £ 3,996,240 | |
| 14148 | one man crying | £ 1,050,939,923 | |
| 14149 | One Mind | £ -5,139,455 | |
| 14150 | one of craze | £ 398,067,001 | |
| 14151 | One Piece | £ 11,282,781 | |
| 14152 | One Pound Fish | £ 1,584,921 | |
| 14153 | One Shot | £ 123,851,456 | |
| 14154 | One Silence | £ -4,074 | |
| 14155 | One to Many. | £ 4,976,234 | |
| 14156 | One United | £ 5,379,005 | |
| 14157 | one1 | £ 1,930,995 | |
| 14158 | oneone | £ 18,206,569 | |
| 14159 | Oner | £ 10,516,756 | |
| 14160 | OneStopEnvelopeShoppe | £ -38,952 | |
| 14161 | Onion of Arabia | £ 11,458,256 | |
| 14162 | Onioninc | £ -43,613 | |
| 14163 | Onions | £ 56,031,337 | |
| 14164 | onions inc | £ 46,832,459 | |
| 14165 | ONLINE GAMES | £ 120,242,830 | |
| 14166 | Only Bombs Allowed | £ 57,741,277 | |
| 14167 | Only Fans | £ 423,295,707 | |
| 14168 | Only Fools and Horses | £ 859,719,219 | |
| 14169 | only me | £ 50,000 | |
| 14170 | only me inc | £ 133,078,068 | |
| 14171 | Onomatopoeias | £ 939,660 | |
| 14172 | Onshore Money | £ 104,918,400 | |
| 14173 | Ontara | £ 79,736,570 | |
| 14174 | Ontario | £ 85,260,376 | |
| 14175 | ontheblock | £ 6,402,837 | |
| 14176 | Onyx | £ 429,592 | |
| 14177 | OO7 | £ 13,573,769 | |
| 14178 | Ooglaigh na Heireann | £ 240,713,877 | |
| 14179 | oohyeaa | £ 50,844,745 | |
| 14180 | Oolacile-01 | £ 3,643,194 | |
| 14181 | oOoOo | £ 8,980,162 | |
| 14182 | oooooo | £ 5,505,528 | |
| 14183 | OOOoooOOO | £ 614,697 | |
| 14184 | oooPPPooo | £ -53,065 | |
| 14185 | oops | £ 965,477 | |
| 14186 | ooz | £ 320,966,832 | |
| 14187 | Opal Opal | £ 5,502,194 | |
| 14188 | Opec | £ 273,634,128 | |
| 14189 | Opel Dire | £ 5,505,993 | |
| 14190 | OpEn FoR BuIsNeSs | £ 5,785,269 | |
| 14191 | Opera House | £ 128,135,275 | |
| 14192 | OPERATION SEALION | £ 10,353,786 | |
| 14193 | OPERATION SEALION 2 | £ 5,504,218 | |
| 14194 | Operations | £ 8,189,228 | |
| 14195 | Ophthalmology | £ 45,575,639 | |
| 14196 | opiates | £ 10,578,986 | |
| 14197 | Opinion | £ 389,953,431 | |
| 14198 | OPiuM | £ 115,856,941 | |
| 14199 | Oppa Gangnam Style | £ 65,242,420 | |
| 14200 | Oppenheim | £ 51,959,450 | |
