Thor: Son of Asgard is a comic book series published by Marvel Comics from March 2004 to January 2005. Written by Akira Yoshida and illustrated by Greg Tocchini, the series follows Thor's early adventures in Asgard with Sif and Balder. It was originally a limited series of six issues but, thanks to popular demand, it was later extended to an ongoing series that lasted for twelve issues in total.

Thor Odinson is a superhero appearing in American comic books published by Marvel Comics. Created by artist Jack Kirby, writer Stan Lee, and scripter Larry Lieber, the character first appeared in Journey into Mystery #83 (1962) and first received his own title with Thor #126 (1966). Thor is an adaptation of the deity of the same name from Norse mythology, and many aspects of Thor's character are based on Norse myth. Comic books featuring Thor have been published across several volumes since the character's introduction.