Johannes Crellius – Hans Krell; Jan Crell – (1590–1633) was a Polish–German theologian.

Crellius was one of the chief theologians of the Polish brethren, and the author of Ad librum Hugonis Grotii quem de satisfactione Christi... (1623), De Deo et eius attributis... (1630), and De uno Deo Patre libri duo (1631). From 1613 he worked at the Academy of Raków , of which he was the rector from 1616 to 1621.