The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 13801 | Ohtaku inc4 | £ 4,118,968 | |
| 13802 | ohyesyesh | £ 50,000 | |
| 13803 | Oil | £ 833,968,470 | |
| 13804 | Oil CONGLOMO | £ 2,646,845 | |
| 13805 | Oil Field | £ 271,568 | |
| 13806 | Oil Inc | £ 1,596,655 | |
| 13807 | Oil Industry | £ 4,441,721 | |
| 13808 | Oil Rigger | £ 2,151,587,047 | |
| 13809 | Oilfield Industries | £ 9,854,297 | |
| 13810 | oiu | £ 5,498,037 | |
| 13811 | OJ da Juiceman | £ 109,855 | |
| 13812 | OK Tom | £ 213,436,455 | |
| 13813 | OKFurniture | £ 50,000 | |
| 13814 | OKG Shed | £ -329,334 | |
| 13815 | OKS 1 PTE LTD | £ 50,000 | |
| 13816 | OKS PTE LTD | £ 2,148,676 | |
| 13817 | OLafa | £ 5,088,982 | |
| 13818 | Oland Ltd | £ 50,000 | |
| 13819 | Olay | £ 326,245,749 | |
| 13820 | Old Age | £ 428,870,365 | |
| 13821 | Old Bay | £ 123,534,579 | |
| 13822 | Old Bill | £ 45,792,842 | |
| 13823 | Old Carpet | £ 163,972,008 | |
| 13824 | old farts | £ 3,542,428,093 | |
| 13825 | Old Feuds | £ 44,696,704 | |
| 13826 | Old Granny | £ 9,329,769 | |
| 13827 | old lard | £ -7,521,344 | |
| 13828 | old legends | £ 14,735,844 | |
| 13829 | Old men | £ 397,899,239 | |
| 13830 | Old No. 7 | £ 675,030,216 | |
| 13831 | Old people | £ 41,298,004 | |
| 13832 | Old Rocker | £ 416,345,265 | |
| 13833 | Old School | £ 5,514,041 | |
| 13834 | old skool butta | £ 614,087 | |
| 13835 | Old Smoky | £ 622,122,584 | |
| 13836 | Old Socks | £ 144,379,758 | |
| 13837 | old to netro | £ 20,422,251 | |
| 13838 | Old Whiskey | £ 17,558,590 | |
| 13839 | Old World Industry | £ 1,734,908 | |
| 13840 | Old World Ventures | £ 50,000 | |
| 13841 | OlDirty | £ 47,991,916 | |
| 13842 | oldschool | £ 121,302,173 | |
| 13843 | Oligarchy | £ 556,860,397 | |
| 13844 | Oligarchy inc. | £ 7,116,723 | |
| 13845 | olis | £ 91,036,818 | |
| 13846 | Oliver Cromwell | £ 220,112,740 | |
| 13847 | Oliver Queen | £ 56,107,912 | |
| 13848 | Olivers Imagination | £ 124,320,555 | |
| 13849 | Ollio Inc. | £ 6,159,098 | |
| 13850 | Ollio2 Inc. | £ -2,232,039 | |
| 13851 | Ollio3 Inc. | £ -680,853 | |
| 13852 | Olrik | £ 22,147,425 | |
| 13853 | Olympia | £ 112,782,553 | |
| 13854 | olympic rings | £ 3,084,696,830 | |
| 13855 | Olympics | £ 5,508,747 | |
| 13856 | Olympus | £ 2,062,876,669 | |
| 13857 | Omega | £ 6,183,955 | |
| 13858 | Omega Indusries | £ 37,799 | |
| 13859 | OmegaFox Inc. | £ 1,266,634 | |
| 13860 | Omelette | £ 10,061,528 | |
| 13861 | Omens | £ 48,675,748 | |
| 13862 | Omerta | £ 1,007,186,123 | |
| 13863 | Omerta Inc. | £ 5,500,096 | |
| 13864 | Omni | £ 26,585,058 | |
| 13865 | Omni Consumer Products | £ -23,968,848 | |
| 13866 | omni4 | £ 1,185,151 | |
| 13867 | Omnia | £ 29,796,207 | |
| 13868 | Omnifarious | £ 1,247,772,696 | |
| 13869 | Omnificent | £ 1,173,000,921 | |
| 13870 | Omnipotent | £ 1,195,158,820 | |
| 13871 | Omnipresent | £ 1,242,063,505 | |
| 13872 | Omniscient | £ 1,275,039,506 | |
| 13873 | Omnitool | £ 4,640,506 | |
| 13874 | on a stick | £ 13,410 | |
| 13875 | On all you Candyass | £ 69,045,286 | |
| 13876 | On Industries | £ 1,896,074 | |
| 13877 | On It | £ 59,533,659 | |
| 13878 | On My Mind | £ 87,748,385 | |
| 13879 | On The Fritz | £ 79,242,996 | |
| 13880 | On the move | £ 119,554,833 | |
| 13881 | on the road | £ 405,722,546 | |
| 13882 | once | £ -263,290 | |
| 13883 | Once Said | £ 4,848,853 | |
| 13884 | Once Upon a Time | £ 24,760,937 | |
| 13885 | Once Were Warriors | £ 54,754,263 | |
| 13886 | one | £ 341,379,992 | |
| 13887 | One and a Half | £ 8,610,014,000 | |
| 13888 | One Company | £ 398,709,264 | |
| 13889 | one dollar company | £ 40,885,349 | |
| 13890 | One Enterprise | £ 5,940,523 | |
| 13891 | One Eye Morty | £ 4,645,496 | |
| 13892 | One Eyed Three Leg Dog | £ 63,605,247 | |
| 13893 | One gun | £ 613,520,604 | |
| 13894 | one hand clapping | £ 94,151,848 | |
| 13895 | One Hit Wonder | £ 30,087,678 | |
| 13896 | One Hundred Netro Bucks | £ 130,455,162 | |
| 13897 | One Insane Rastaman | £ 273,250,880 | |
| 13898 | one love | £ 3,838,898 | |
| 13899 | One Man | £ 3,996,240 | |
| 13900 | one man crying | £ 1,050,939,923 | |
