Väisälä may refer to:
Vaisala, Samoa, a village in the island of Savai'i Vilho Väisälä (1889–1969), Finnish meteorologist and physicist Vaisala, a company founded by Vilho Väisälä Yrjö Väisälä (1891–1971), Finnish astronomer and physicist 1573 Väisälä, a main belt asteroid Väisälä (crater), a lunar impact crater
See also Brunt–Väisälä frequency Schmidt-Väisälä camera, an astronomical telescope 139P/Väisälä–Oterma, a periodic comet in the Solar System