John F. Kennedy
James (Jimmy) Carter
Barack you say? Yes Barack. Barack (sometimes translated as Barak) was the military commander who led Deborah's armies to victory in the book of Judges. The book of Hebrews mentions Barak as one of the heroes of the faith.
Overall there are seventeen American presidents who have had a Biblical first name.
Here they are...(James wins with six instances)
John Adams, Thomas Jefferson, James Madison, James Monroe, John Quincy Adams, Andrew Jackson, John Tyler, James Polk, Zachary Taylor, James Buchanan, Abraham Lincoln, Andrew Johnson, James Garfield, Benjamin Harrison, John Kennedy, James Carter and Barack Obama.