Johan Alm (1728–1810) was a Finnish painter and field sergeant.
Alm was born and lived and worked most of his life in the city of Vaasa. Alm's son Immanuel Alm was also a painter. They both worked on religious-themed paintings, including altarpieces such as one at the church in Kaustinen. Alm was also responsible for ceilings and other interior works at churches in Kvevlax and Isokyrö.
- Some of this material was translated from the Finnish Wikipedia article
- Appelgren, Kari: Johan Alm, Hantverksmålare i Vasa på 1700-talet, 1974