代國
(?
220年～
277年)
拓跋力微（174年－277年），約當中國三國時期至西晉初年的索頭部鮮卑族領袖，220年至277年在位，是南北朝時期北魏皇帝的先祖。其父為前任首領拓跋詰汾，其兄為十六國時期南涼國的先祖禿發匹孤。
《魏書·序記》記載力微係詰汾與天女所生，頗具神話色彩。詰汾去世後，力微繼其位，時在220年。繼位之初，拓跋部所屬的西部鮮卑內亂，相互攻伐，部衆離散，因此力微投靠“沒鹿回部”酋長竇賓。竇賓賞識力微，欲分封國土之半予力微，力微不接受，竇賓因此將女兒嫁給力微。力微又請求率領所部北居長川，十數年後，因治理有方，舊有部衆都來歸附。
248年，竇賓去世後，其子陰謀作亂，力微殺之，吞併其部衆，各酋長首領皆服從力微，史載當時力微的勢力“控弦上馬二十餘萬”。258年，再南遷至盛樂（今中國內濛古和林格爾北），召集諸部酋長，遠近莫不畏服。261年，派其子拓跋沙漠汗入曹魏為質子。
277年，因西晉幽州刺史衛瓘的計策，力微聽信各部酋長的讒言，使得沙漠汗在力微的黙許下被各部酋長所殺。衛瓘又設計使各部酋長離散，力微因此憂愁而死，史載其享年一百零四歲。子拓跋悉鹿繼立。
北魏道武帝拓跋圭稱帝時，被追謚為神元皇帝，廟號為始祖。
"Wei Shu sequence in mind," written with little power systems interrogate Fen-day birth, rather myth. It's long Fen after the death of little power, following its position in 220 years time. To the throne at the beginning, the Ministry of the western Tuoba Xianbei civil strife, mutual attack the, the Department of Public discrete, so little power in relying on "no deer Mikurube" Bin Sheikh sinus. Bin appreciated sinus power in an attempt to force semi-feudal land of micro-, micro-power not to accept, sinus Bin so little power to daughters. Micro Power has requested led his troops north Icho Sichuan, more than a decade later, due to well-governed, the old department have to join themselves to the public.
Wei Tao Wu Di Tuo Bagui emperor, he was chasing posthumous title of God Emperor Yuan, posthumous names of the ancestor.