The following list shows all the companies that are in the game.
| Companies List | |||
| Pos. | Company Name | Awards | Total Worth |
| 8401 | inishing | £ 140,697,472 | |
| 8402 | Initech | £ 36,273 | |
| 8403 | Initial Test | £ 32,245,452 | |
| 8404 | Initiative | £ 149,209,958 | |
| 8405 | Ink | £ 47,124,269 | |
| 8406 | Inkatek | £ 1,339,600 | |
| 8407 | Inle Lake | £ 832,821,574 | |
| 8408 | Inn of the Last Home | £ 1,403,402 | |
| 8409 | Inner Station | £ 6,596,243 | |
| 8410 | Innisfree | £ 193,862,053 | |
| 8411 | Innocence | £ 61,612,365 | |
| 8412 | Innocent Enterprise | £ 28,100,405 | |
| 8413 | Innocent Waif Co. | £ 1,079,484 | |
| 8414 | Innsbruck | £ 38,394,642 | |
| 8415 | Insane In The Membrane | £ 24,847,795 | |
| 8416 | Insane Inc | £ 103,865,323 | |
| 8417 | insanity | £ 5,114,820 | |
| 8418 | Insanity.inc | £ -4,636,568 | |
| 8419 | Insect Inferno | £ 4,274,551 | |
| 8420 | insects | £ 40,152,036 | |
| 8421 | Insert Tool Tech | £ 207,767,516 | |
| 8422 | inside | £ 545,418,918 | |
| 8423 | Inside Man | £ 151,378,878 | |
| 8424 | Insight | £ 4,930,782 | |
| 8425 | Insomnia | £ 111,310,354 | |
| 8426 | Insomnia Inc | £ 13,618,559 | |
| 8427 | Insomniac | £ 270,517,763 | |
| 8428 | Insomniacs Inc | £ 247,889 | |
| 8429 | InsomniaX | £ 55,763,119 | |
| 8430 | Inspecticide | £ 86,260,352 | |
| 8431 | Inspecticidus | £ 1,179,300 | |
| 8432 | Inspiration | £ 38,352,811 | |
| 8433 | Inspired | £ 172,939,387 | |
| 8434 | Inspiron | £ 55,842,972 | |
| 8435 | Insta-threat11 | £ -10,135,618 | |
| 8436 | £ 188,730,522 | ||
| 8437 | Instrument | £ 5,045,464 | |
| 8438 | Insufficient Amount | £ 115,460,289 | |
| 8439 | Insults | £ 555,598,769 | |
| 8440 | Insurance | £ 192,712,894 | |
| 8441 | Insurgency | £ 42,263,108 | |
| 8442 | IntArch | £ 4,051,737 | |
| 8443 | Integrated Finance | £ 5,613,209 | |
| 8444 | Integrity | £ 62,272,169 | |
| 8445 | Intel | £ 4,159,306 | |
| 8446 | Intel Corperation | £ 5,502,692 | |
| 8447 | INTELECT MID | £ 4,542,979 | |
| 8448 | INTELECT NORTH | £ 3,506,604 | |
| 8449 | INTELECT SOUTH | £ 5,501,704 | |
| 8450 | Inteligent | £ 320,833,576 | |
| 8451 | Intelligence | £ 1,269,185,751 | |
| 8452 | intense lines | £ 748,561 | |
| 8453 | Intense Solar | £ 50,000 | |
| 8454 | Intent | £ 208,032,022 | |
| 8455 | Intentions | £ 16,187,793 | |
| 8456 | Inter Ya Dog | £ 53,832,886 | |
| 8457 | Inter Ya Gran | £ 9,894,081 | |
| 8458 | Inter Ya Granny | £ 44,877,387 | |
| 8459 | Inter Ye mam | £ 33,791,306 | |
| 8460 | Intercourse | £ 5,503,657 | |
| 8461 | Interest | £ 257,540,807 | |
| 8462 | Interesting Inc. | £ 115,169,616 | |
| 8463 | Intergalactic Humanoids | £ 138,751,883 | |
| 8464 | Interior Two | £ 8,053,163 | |
| 8465 | Interlaced ent | £ 26,839,614 | |
| 8466 | Interlaced inc | £ 6,609,164 | |
| 8467 | Interlagos | £ 62,187,801 | |
| 8468 | Internal Audit | £ 5,084,223 | |
| 8469 | Internet Chicken | £ 2,964,862 | |
| 8470 | Intestinal Discomfort | £ 56,322,543 | |
| 8471 | Intimacy | £ 305,413,940 | |
| 8472 | Intl Secret Intel Agency | £ 283,843,957 | |
| 8473 | Intothenight | £ 1,845,829 | |
| 8474 | Intrepia | £ 59,115,436 | |
| 8475 | Invaders 2 | £ 33,587,924 | |
| 8476 | Invaders 4 | £ 2,086,777 | |
| 8477 | invalid | £ -9,650,282 | |
| 8478 | Invasion | £ 256,014,837 | |
| 8479 | Inventions R US | £ 6,854,812 | |
| 8480 | Inverse Ferocity | £ 10,650,542 | |
| 8481 | Inversion | £ 84,939,373 | |
| 8482 | Investigation | £ 32,969,246 | |
| 8483 | Investment | £ 2,230,407,528 | |
| 8484 | Invicible | £ 1,571,549,869 | |
| 8485 | Invictus | £ 234,266,883 | |
| 8486 | Invictus Co. | £ 6,317,756 | |
| 8487 | Invincible Blood | £ 22,642,999 | |
| 8488 | Invisible | £ 5,500,467 | |
| 8489 | Invisible Gorillas | £ 43,118,470 | |
| 8490 | IOM | £ 10,369,366 | |
| 8491 | Ipeople | £ 6,717,633 | |
| 8492 | iPhone 5s or iPhone 5c | £ 251,993,104 | |
| 8493 | iphone se 2 | £ 1,537,913 | |
| 8494 | iPhones | £ 59,198,794 | |
| 8495 | Ireland | £ 5,965,992 | |
| 8496 | iReps | £ 2,223,311 | |
| 8497 | Irish Bomber | £ 50,000 | |
| 8498 | Irish Charm | £ 30,032 | |
| 8499 | Irish Red Inc | £ 5,507,308 | |
| 8500 | Irish Republican Army | £ 191,860,837 | |
