우에스기 가게카쓰
was a Japanese noble woman from the Sengoku period. She was the half-sister of Japanese warlord Uesugi Kenshin. She was also the mother of Uesugi Kagekatsu and the first wife of Nagao Masakage Aya is best known for her role in events before and after the siege of Otate; she lamented the Uesugi civil war for succession after Kenshin's death and refused to support either heir.