Miya Tachibana (立花 美哉 Tachibana Miya, born December 12, 1974) is a Japanese competitor in synchronized swimming from Ōtsu, Shiga. She received five Olympic medals at the 1996, the 2000 and the 2004 Summer Olympics. The silver medal from 2000 was in duet with Miho Takeda, and the same duet received a silver medal at the 2004 Olympics.
Tachibana began practicing the sport during her fourth year in elementary school. During the summer of 2008, she was a synchronized swimming coach for the Santa Clara Aquamaids in Santa Clara, California.