No. He was a proud Catholic and oversaw the persecution of Protestants in all Habsburg Territories (Spain, Austria, Hungary, Netherlands, Belgium, etc.).
He was a Catholic. 15-year-old Catholic princess who refused to take part in English Protestant ceremonies of state
I'm assuming you mean King Charles I... he was protestant.
Protestant
Protestant.
Protestant
Protestant Movement
Charles Morell Watson has written: 'Protestant crusaders'
Charles Wheeler Iglehart has written: 'A century of Protestant Christianity in Japan' -- subject(s): Church history, Missions, Protestant churches
Protestant
Charles the Fifth
Holy Roman Emperor Charles V is known for his opposition to the Protestant Reformation. His non-violent measures saved Spain from much for the religious conflict going on at this time.
He was a Protestant all his life until on his death bed, when he chose to convert to Catholicism. A priest was smuggled into the palace he was in.
By removing all the constitutional restrictions the working out of the protestant reformation from Henry VII through Charles provided impetus for English settlement.