Mark Teague (born 1963) is an American author and illustrator of children's books.

Although he had no formal writing training, he quickly became a writer of over 20 children's books.

Each of Mark Teague's books starts as "notebooks full of sketches and scribbles, strange little drawings and phrases that suddenly come together" he has described in interviews.

Teague's first full-length novel for children, The Doom Machine, was published in October 2009 by Scholastic Inc. Set in 1956, it tells the tale of Jack Creedle, a paperboy whose world is turned upside down when a space shuttle lands in his hometown.

Aliens, time machines, and Mark Teague's signature illustrations ensue and he teaches children's book illustration at Hollins University and the Rhode Island School of Design.