The name Krzepice, mentioned for the first time in 1356 as Crzepycze, comes from a last name Krzepa; most probably, members of this family lived in the area of the town. In a Latin language medieval document of the Roman Catholic Archdiocese of Wrocław (Liber fundationis episcopatus Vratislaviensis), written in 1295–1305, Krzepice is spelled Crippicz antiquum.
