Johann Hast (June 15, 1808 – February 19, 1852) was a German philosopher born in Ottenstein-Ahaus. He studied philosophy and philology at the Academy of Münster, and afterwards taught classes at a vocational school in Münster. Later in his career, he worked as a bookseller and private journalist in Berlin and Münster, publishing works on philosophy, religion, education, et al. Among his literary works were two books involving Hermesian philosophy: Hast died in Münster on February 19, 1852 at the age of 43.