Which presidents were Unitarian? Unitarian Presidents
John Adams
John Quincy Adams
Millard Fillmore
William Howard Taft
complete list of religious denominations of presidents
Interestingly, Eisenhower's parents were pretty serious Jehovah's Witnesses. I think it is safe to say that he stopped believing Russelism by the time he was Prez (for starters., they don't get involved in politics). He DID use a "New World Translation" Bible for the second inaugural, however.