It's the Great Pumpkin, Charlie Brown is a 1966 American animated Halloween television special based on the comic strip Peanuts by Charles M. Schulz. The third Peanuts special, and the second holiday-themed special, to be created, it was written by Schulz along with director/animator Bill Melendez and producer Lee Mendelson. The cast included Peter Robbins as Charlie Brown, Christopher Shea as Linus Van Pelt, Sally Dryer as Lucy Van Pelt, and Melendez as Snoopy. The special features music composed by jazz pianist Vince Guaraldi, whose contributions include the theme song "Linus and Lucy". It aired on broadcast television every year from its debut in 1966 until 2020 when it became an Apple TV+ exclusive.

Peanuts is a syndicated daily and Sunday American comic strip written and illustrated by Charles M. Schulz. The strip's original run extended from 1950 to 2000, continuing in reruns afterward. Peanuts is among the most popular and influential in the history of comic strips, with 17,897 strips published in all, making it "arguably the longest story ever told by one human being"; it is considered to be the grandfather of slice of life cartoons. At the time of Schulz's death in 2000, Peanuts ran in over 2,600 newspapers, with a readership of roughly 355 million across 75 countries, and had been translated into 21 languages. It helped to cement the four-panel gag strip as the standard in the United States, and together with its merchandise earned Schulz more than $1 billion.