Reginald Bathurst Birch (May 2, 1856 – June 17, 1943) was an English-American artist and illustrator. He was best known for his depiction of the titular hero of Frances Hodgson Burnett's 1886 novel Little Lord Fauntleroy, which started a craze in juvenile fashion. While his illustrated corpus has eclipsed his other work, he was also an accomplished painter of portraits and landscapes.