Rerun Van Pelt is Linus and Lucy's youngest brother in Charles M. Schulz's comic strip Peanuts. Lucy Van Pelt, his sister, disparagingly calls the situation a "rerun" of the birth of her brother Linus, so Linus nicknames the child "Rerun". Despite Lucy's disappointment, she becomes a warm and protective older sister.

Rerun was a minor character in the strip when he was introduced in 1972, and in the 1980s he mostly appeared in sequences riding on the back of his mother's bicycle. However, in the late 1990s — the final years of the strip — he became a major presence, as Schulz felt that his main cast was "too old" for some of the themes he wanted to explore. In a 1997 interview in Comics Journal, Schulz admitted, "Lately, Rerun has almost taken over the strip."

Rerun made his first appearance in animation in the 1976 special It's Arbor Day, Charlie Brown, voiced by Vinnie Dow. He returned in the 1983 special It's an Adventure, Charlie Brown and the 1983–1986 series The Charlie Brown and Snoopy Show, voiced by Jason Mendelson, the four-year-old son of producer Bill Mendelson. Rerun was the main character in the 2003 special I Want a Dog for Christmas, Charlie Brown, with a storyline drawn from the strip's Rerun-heavy final years. He also has an important role in the 2006 special He's a Bully, Charlie Brown.