The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 18301 | Unimaginable Wealth | £ 1,713,027,549 | |
| 18302 | Uninformed Players | £ 1,549,564 | |
| 18303 | Unintended Consequences | £ 416,610,465 | |
| 18304 | Union Depository | £ 481,043 | |
| 18305 | unique state | £ 5,502,813 | |
| 18306 | UNIT | £ 10,172,688 | |
| 18307 | United Irishmen | £ 21,870,609 | |
| 18308 | united kingdom | £ 11,728,775 | |
| 18309 | United Nations | £ 7,828,573 | |
| 18310 | United States | £ 119,110,455 | |
| 18311 | United States Education | £ 733,211 | |
| 18312 | United States of America | £ 27,418,627 | |
| 18313 | UNITED WORLD | £ 7,387,638 | |
| 18314 | univers | £ 311,111,849 | |
| 18315 | Universal Exports | £ 126,418,183 | |
| 18316 | Universal Society | £ 42,080 | |
| 18317 | Universal Studio | £ 133,197,634 | |
| 18318 | university | £ 44,482,778 | |
| 18319 | Univex | £ 6,299,220 | |
| 18320 | Unknown | £ 322,457 | |
| 18321 | Unknown Targets | £ 55,046,887 | |
| 18322 | Unknowns | £ 188,825,518 | |
| 18323 | unlimited | £ 235,188,123 | |
| 18324 | Unlucky | £ 354,501,593 | |
| 18325 | Unmarked Bills | £ 932,151,680 | |
| 18326 | Unnecessary Violence | £ 38,817,254 | |
| 18327 | unowned | £ 6,390,326 | |
| 18328 | unrban | £ 74,481,197 | |
| 18329 | Unseen University | £ 39,525,264 | |
| 18330 | Until Provoked | £ 63,748,480 | |
| 18331 | Untouchable | £ 1,823,894,965 | |
| 18332 | Unusual Oil | £ -647,511 | |
| 18333 | unwashed socks | £ 53,038,556 | |
| 18334 | Up Miami | £ 58,708,665 | |
| 18335 | Up Ur Ars | £ -117,752 | |
| 18336 | Upon A Time | £ 9,966,788 | |
| 18337 | Ups And Downs | £ 43,433,227 | |
| 18338 | Upstairs | £ 3,509,641 | |
| 18339 | uptheblues | £ 2,657,143 | |
| 18340 | Upyours.org | £ 2,405,714 | |
| 18341 | ur mom | £ -16,959 | |
| 18342 | Ur Useless Existance | £ 13,362,410 | |
| 18343 | Uranus | £ 49,114,757 | |
| 18344 | Urban | £ 3,980,563 | |
| 18345 | Urban Decay | £ 78,775,226 | |
| 18346 | Urban Warfare | £ 6,352,781 | |
| 18347 | UrDestruction | £ 155,736,739 | |
| 18348 | Urgency | £ 126,491,816 | |
| 18349 | urmumshouse | £ 40,309,143 | |
| 18350 | UrNightmare | £ 100,535,940 | |
| 18351 | Ursula | £ 2,507,365 | |
| 18352 | Uruguay | £ 20,112,119 | |
| 18353 | Us All | £ 9,586,950 | |
| 18354 | US drinking age | £ 59,039,609 | |
| 18355 | Us is in the wrong | £ 59,155,406 | |
| 18356 | us marines | £ 59,366,445 | |
| 18357 | US UK OZ EUROPE | £ 178,014,792 | |
| 18358 | usa | £ 35,460,389 | |
| 18359 | Usain Bolt | £ 133,735,358 | |
| 18360 | Use | £ 46,469,331 | |
| 18361 | usedcarshowroom | £ 12,175,667 | |
| 18362 | Useing Scissors | £ 70,500,800 | |
| 18363 | USPS | £ 275,206,934 | |
| 18364 | USS America | £ 525,949,755 | |
| 18365 | USS Enterprise | £ 530,076,179 | |
| 18366 | USS Voyager | £ 1,922,144 | |
| 18367 | Utd | £ 1,538,860 | |
| 18368 | UTF Industries | £ -6,680,402 | |
| 18369 | Utmost Importance | £ 10,423,102 | |
| 18370 | Utopia | £ 587,391,216 | |
| 18371 | Utopia2 | £ 19,520,009 | |
| 18372 | Utopia3 | £ 19,612,004 | |
| 18373 | Utopia4 | £ 92,387,139 | |
| 18374 | Utter Chaos | £ 3,191,939,265 | |
| 18375 | UU 14 | £ 7,867,236 | |
| 18376 | UVB-76 | £ 6,442,326,086 | |
| 18377 | UWS Associates | £ 444,338,603 | |
| 18378 | Uxbridge | £ 4,471,496 | |
| 18379 | uyt | £ 4,799,843 | |
| 18380 | UZGENT | £ 40,610,933 | |
| 18381 | Uzumaki | £ 10,955,098 | |
| 18382 | V 32 V | £ 59,807,574 | |
| 18383 | V Energy | £ 3,804,443 | |
| 18384 | V-Star revolutions | £ 1,106,562 | |
| 18385 | V.E.S Vending | £ 59,646,134 | |
| 18386 | V37 | £ 55,026,557 | |
| 18387 | VA Sophamore | £ 184,168,662 | |
| 18388 | vacant | £ -22,854,297 | |
| 18389 | Vachina | £ 2,343,108 | |
| 18390 | Vaginal Hubris | £ 5,221,370 | |
| 18391 | Vala Mal Doran | £ 50,000 | |
| 18392 | Valaris | £ 4,296,842 | |
| 18393 | Valaste | £ 122,992,461 | |
| 18394 | Valdemar | £ 2,679,479 | |
| 18395 | Valdivia | £ 119,276,267 | |
| 18396 | Valentines Day Massacre | £ 3,817,075 | |
| 18397 | Valentino | £ 674,250 | |
| 18398 | Valhalla | £ 5,281,407 | |
| 18399 | Valkyrie | £ 17,668,130 | |
| 18400 | Value | £ 499,661,748 | |
