Adam Tanner (in Latin, Tannerus) (April 14, 1572 – May 25, 1632) was an Austrian Jesuit professor of mathematics and philosophy.
He was born in Innsbruck, Austria. In 1589 he joined the Society of Jesus and became a teacher. By 1603 he was invited to take the chair of theology at the University of Ingolstadt. Fifteen years later he was given a position at the University of Vienna by the Emperor Matthias.
He was noted for his defense of the Catholic church and their practices against Lutheran reformers as well as the Utraquists. His greatest work was the Universa theologia scholastica, published in 1626-1627.
He died at the village of Unken near Salzburg, and rests in an unmarked grave. Apparently the parisioners refused to give him a Christian burial because a "hairy little imp" was found on a glass plate among his possessions.
Tannerus crater on the Moon is named for him.