Billy Tan Mung Khoy, commonly known as Billy Tan, is a Malaysian comic book artist.
Billy Tan grew up in Malaysia and moved to the United States in 1989 to study business at the University of Kentucky. He began working as a penciler for Image Comics in the 1990s.
Tan became the regular artist of the Marvel Comics series Uncanny X-Men in 2006. In 2008, he was invited to draw New Avengers Secret Invasion tie-in issues #41 and 43-44, before being offered to replace Leinil Francis Yu as the new regular artist on the title.Photo by Luigi Novi.