The Knights Templar, full name The United Religious, Military and Masonic Orders of the Temple and of St John of Jerusalem, Palestine, Rhodes and Malta, is a fraternal order affiliated with Freemasonry. Unlike the initial degrees conferred in a regular Masonic Lodge, which (in all Regular Masonic jurisdictions) only require a belief in a Supreme Being regardless of religious affiliation,[1] the Knights Templar is one of several additional Masonic Orders in which membership is open only to Freemasons who profess a belief in Christianity
Like the Masonic Red Cross of Constantine being inspired by the Sacred Military Constantinian Order of Saint George and the Order of Malta being inspired by the Sovereign Military Order of Malta, the Masonic order of Knights Templar derives its name from the medieval Catholic military order Knights Templar. However, it does not claim any direct lineal descent from the original Templar order.
https://en.wikipedia.org/wiki/Knights_Templar_(Freemasonry)