The 4th Infantry Brigade (Greek: IV Ταξιαρχία Πεζικού, IV Taxiarchia Pezikou) was an infantry brigade of the Hellenic Army. Originally formed in 1897, it served until 1912. Re-formed in the lead-up to the Greco-Italian War in 1940, it was expanded and renamed as the 15th Infantry Division after the war started. It was again reactivated in 1998, and served until 2013.