Johan Magnus Almqvist (September 6, 1799 – October 9, 1873) was a Swedish theologian and parliamentarian.
He was born in Stockholm, Sweden.
He became a member of the Order of the Polar Star a Swedish order of chivalry in 1862.
He married Fredrika Eneström 7 July 1830 and was a church clergyman in Skärstad Church until his death.
His brother was the Swedish politician Ludvig Almqvist.