<P> The religious affiliations of Presidents of the United States can affect their electability , shape their stances on policy matters and their visions of society and also how they want to lead it . Speculation of Thomas Jefferson , Abraham Lincoln , and William Howard Taft being atheists was reported during election campaigns , while others , such as Jimmy Carter , used faith as a defining aspect of their campaigns and tenure to hold the office . Almost all of the presidents can be characterized as Christian , at least by upbringing , though some were unaffiliated with any specific religious body . Protestants predominate , with Episcopalians and Presbyterians being the most prevalent . There has been a single Roman Catholic president , John F. Kennedy . No president thus far has been openly an atheist . However , it has been acknowledged that two US Presidents -- Thomas Jefferson and Andrew Johnson -- had no religious affiliation . </P>
<P> The religious affiliations of Presidents of the United States can affect their electability , shape their stances on policy matters and their visions of society and also how they want to lead it . Speculation of Thomas Jefferson , Abraham Lincoln , and William Howard Taft being atheists was reported during election campaigns , while others , such as Jimmy Carter , used faith as a defining aspect of their campaigns and tenure to hold the office . Almost all of the presidents can be characterized as Christian , at least by upbringing , though some were unaffiliated with any specific religious body . Protestants predominate , with Episcopalians and Presbyterians being the most prevalent . There has been a single Roman Catholic president , John F. Kennedy . No president thus far has been openly an atheist . However , it has been acknowledged that two US Presidents -- Thomas Jefferson and Andrew Johnson -- had no religious affiliation . </P>
who was the only roman catholic ever elected president
who was the only roman catholic ever elected president
John F. Kennedy
John F. Kennedy