Judas the Zealot (Judas Zelotes) is a New Testament figure whose identity is not completely clear. He is mentioned in the Epistle of the Apostles (Epistula Apostolorum), written in the 2nd century. He is usually identified with the Apostle Simon the Zealot, with which he shares the surname, or with the Apostle Jude, also known as Thaddaeus. According to Bruce Metzger's Textual Commentary on the Greek NT, Matthew 10:3: "The name Judas Zelotes in several Old Latin manuscripts (compare also the same name in the fifth century mosaic in the great Baptistry at Ravenna) may be a further assimilation to the previous name in Luke's list, "Simon who was called the Zealot.""

New Testament people