Haruhiro Sagara (13 October 1513 – 28 August 1555) was a Japanese daimyo who ruled over the Sagara clan of Higo Province during the Sengoku period. Sagara allied himself with the Shimazu clan of Satsuma Province, and became fierce rivals with the neighboring Otomo clan. He died at Takamine Castle in 1555 at the age of 42.