Fujiwara no Nobuyori (藤原 信頼, 1133 – February 6, 1160) was the instigator and chief ally of Minamoto no Yoshitomo in the Heiji Rebellion of 1159.
As a member of the Fujiwara clan, Nobuyori might have been in line to become regent, and he desired power, which he obtained for a short while following the Rebellion.
In the late 1150s, tensions rose in court between Fujiwara no Michinori (Shinzei) and his political opponents, centering around a number of issues, including executions of supporters of Sutoku from the Minamoto clan, Shinzei's attempts to restore the authority of the crown, the relative favour given to Taira no Kiyomori and Minamoto no Yoshitomo, and the powers of the retired (cloistered) Emperor Go-Shirakawa relative to his son Emperor Nijō.
According to some sources, Fujiwara no Nobuyori had homosexual relations with Emperor Go-Shirakawa, which resulted in his high government post.
Nobuyori and the Minamoto attacked the Sanjō Palace, abducting the former Emperor Go-Shirakawa, killing much of his staff, and setting the building aflame.