No, a Roman Catholic.
James Joyce was an Irish author who lived from 1882-1941. He was an important writer of the modernist movement, he first became known for his short stories in Dubliners. His most famous work was his...
Protestant
He entered UCD in 1898 and studied modern languages such as English, Italian, and French. He graduated from UCD in 1903.
He was a British subject, if that's what you had in mind. But he was as Irish as can be!