Antti Haapalainen (b. 1966) is a Finnish composer, conductor and music theory lecturer at the Turku Conservatory.

He has studied singing, piano, harpsichord, viola and conducting at Turku Conservatory and Turku University of Applied Science. He has also studied choir conducting at Kurt Thomas Courses in Utrecht, Netherlands.

Haapalainen has written music for solo instruments, ensembles, choirs and orchestras. His music has been performed by Turku Ensemble, Kajaanin orkesteri, Turku Conservatory Chamber Choir, Aino Choir and many others. He was a conductor of Naantali Chamber Choir in 2012-19 and he has been a conductor of Turun Musiikin Ystävät orchestra since 2021.