For Thaddeus of Edessa also known as Adai Mar Addai, see Thaddeus of Edessa

Jude, also known as Judas Thaddaeus, was one of the Twelve Apostles of Jesus. He is generally identified with Thaddeus, and is also variously called Jude of James, Jude Thaddaeus, Judas Thaddaeus or Lebbaeus. He is sometimes identified with Jude, the brother of Jesus, but is clearly distinguished from Judas Iscariot, the apostle who betrayed Jesus prior to his crucifixion. Judas Thaddeaus became known as Jude after early translators of the New Testament from Greek into English sought to distinguish him from Judas Iscariot and subsequently abbreviated his forename. Most versions of the New Testament in languages other than English and French refer to Judas and Jude by the same name.