Sagara Haruhiro (相良晴広) (1513 - 1557) was a daimyō during Sengoku Period Japan, ruling predominantly from southern Higo Province. An ally of Shimazu Takahisa, Haruhiro became increasingly dependent on his more powerful southern neighbour due to pressure from Aso Koretoyo. After being defeated by Koretoyo at the battle of Yamae, Haruhiro was forced to flee south, returning with the forces of Takahisa who would face against Koretoyo again at the battle of the Sogi Falls.
Although Koretoyo was eventually defeated at the siege of Aso Castle, his son Koremasa was allowed to remain the daimyō of both Aso and northern Higo Province, indicating Haruhiro's waning political authority and position in the eyes of Takahisa. Haruhiro's son, Norihiro, would only inherit Hitoyoshi Castle upon his death and no longer held the position of 島津 の大将, "General of the Shimazu". The Sagara Clan would essentially fall completely out of favour by 1560, when Shimazu Yoshihiro was granted dominion over Higo Province.