The following USAAF units operated Thunderbolts:
334th, 335th, and 336th Fighter Squadrons
36th Fighter Squadron
522nd, 523rd, and 524th Fighter Squadrons
58th, 59th, and 60th Fighter Squadrons
39th, 40th, and 41st Fighter Squadrons
22nd, 23rd, and 58th Fighter Squadrons
492nd, 493rd, and 494th Fighter Squadrons
9th Fighter Squadrons
10th, 81st, and 313th Fighter Squadrons
61st, 62nd, and 63rd Fighter Squadrons
64th, 65th, and 66th Fighter Squadrons
69th, 310th, and 311th Fighter Squadrons
82nd, 83rd, and 84th Fighter Squadrons
85th, 86th, and 87th Fighter Squadrons
88th, 89th, and 90th Fighter Squadrons
91st, 92nd, and 93rd Fighter Squadrons
525th, 526th, and 527nd Fighter Squadrons
19th, 73rd, and 333rd Fighter Squadron
314th, 315th, and 316th Fighter Squadrons
317th, 318th, and 3195h Fighter Squadrons
99th, 100th, 301st, and 302nd Fighter Squadrons
340th, 341st, 460th, and 342nd Fighter Squadrons
345th, 346th, and 347th Fighter Squadron
328th, 486th, and 487th Fighter Squadron
350th, 351st, 352nd Fighter Squadrons
353rd, 355th, and 356th Fighter Squadron
354th, 357th, and 358th Fighter Squadrons
359th, 360th, and 361st Fighter Squadrons
365th, 366th, and 367th Fighter Squadrons
368th, 369th, and 370th Fighter Squadrons
374th, 375th, and 376th Fighter Squadrons
377th, 378th, and 379th Fighter Squadrons
386th, 387th, and 388th Fighter Squadrons
389th, 390th, and 391st Fighter Squadrons
392nd, 393rd, and 394th Fighter Squadrons
395th, 396th, and 397th Fighter Squadrons
404th, 405th, and 406th Fighter Squadrons
410th, 411st, and 412nd Figher Squadrons
506th, 507th, and 508th Fighter Squadrons
509th, 510th, and 511th Fighter Squadrons
512th, 513rd, and 514th Fighter Squadrons
1st, 31st, and 34th Fighter Squadrons
413rd, 414th, and 415th Fighter Squadrons
463rd, 464th, and 465th Fighter Groups
Sources: