Joachim Sterck van Ringelbergh (Joachimus Fortius Ringelbergius) (Antwerp, c.1499-c. 1556) was a Flemish scholar, humanist, mathematician and astrologer.
He is credited with inventing the term encyclopedia. More precisely, cyclopedia, in the book title Lucubrationes vel potius absolutissima kyklopaideia (Basel, 1541).
He is known also for his book on pedagogy, De Ratione Studii (initial page).