210s–230s), courtesy name Yishan, was a Chinese politician of the state of Cao Wei during the Three Kingdoms period of China.
Once, when the military officers in his home commandery sought his opinion on who would win the battle of Guandu, he replied that "Lord Yuan (Yuan Shao) is lenient but indecisive, foxy but inconclusive; people won't be afraid of his might since he is indecisive, and he'll let opportunities slip by since he is inconclusive.
Ma Chao, one of the leading warlords in the coalition, managed to escape to the territory of the Qiang and Hu tribes to recuperate.
Ma Chao soon besieged Ji County, the last stronghold in Liang Province which remained under Han control.
Yang Fu lied to Ma Chao that he wanted to see to the funeral arrangements for his recently deceased wife and gained permission to leave Ji County.
During the battles against Ma Chao, Yang Fu sustained five wounds over his body and lost seven relatives.
Ma Chao eventually gave up on Liang Province and fled to Hanzhong Commandery to join the warlord Zhang Lu.
Later, when Cao Rui started on his extravagant construction projects and expansion of his imperial harem, Yang Fu repeatedly advised the emperor against such actions.