宕昌國
(?～
541年)
梁仚定（？－541年），為南北朝時期宕昌國君主之一。
周書中記載，宕昌原事北魏恭謹，後來看到北魏分裂成東、西魏，遂有背叛之意。仚定在位期間，於北魏末年、西魏初年屢犯魏境，後為西魏所破，仚定嚮西魏請罪，被任命其為撫軍將軍。西魏文帝大統四年（538年），被任命為南洮州刺史、要安蕃王。後來洮州改為岷州，仚定仍為刺史。大統七年（541年），仚定又舉兵犯西魏。北魏命將領獨孤信討伐，魏軍未至而仚定已先為部下所殺。
仚定的部衆後來被獨孤信擊敗，仚定弟梁彌定被西魏另立為宕昌王。
Weeks, the book records, the original thing Dangchang Northern reverent, was seen split into Eastern Wei, Western Wei, then there is the meaning of betrayal. Xian will reign in the late Northern Wei, Western Wei Wei repeat offenders throughout the early years after the break for the Western Wei, Western Wei Xian orientation confessing, was appointed as Fujun its general. Western Wei Emperor Wen large system four years (538 years), was appointed as South Tao prefectural governor, to safety and Fan Wang. Later, the state changed Minzhou Tao, Xian will still provincial governor. Great system for seven years (541 years), Western Wei Xian will commit another Ju-Bing. Du Gu Wei generals believe life crusade, Xian Wei before the arrival of the first set as the men had been killed.