Big Bag was a live action television puppet program for preschoolers that was produced by Children's Television Workshop with the puppet characters made by The Jim Henson Company. It aired from 1996 to 1998 on the Cartoon Network. There were also localized versions for Canal J in France and Yorkshire Television in the UK.

The principle Muppet character was Chelli, a puppet dog who is joined by his best friend Bag. They live with their human friend Molly. Also on the show was Lyle the Sock and Argyle McSock who often interact with the characters. In 1998, a humanoid puppet character called Sofie joined the cast.

The first season also featured frequent interaction with a large cast of human regulars, including an assortment of child friends (notably Kim), and colorful locals including Martha, Bernard, Trudy, Josie, Doc Furrball, and Waldo.

The scenes with Chelli and friends served as frames for a variety of individual animated segments, which were also rotated between seasons. As opposed to the shorter clips on Sesame Street, the animated segments ran approximately 3 to 8 minutes each, and were produced by various studios in New York, Australia, and Europe, often with consultation from CTW and Cartoon Network (Big Bag aired back to back with Small World, another preschool series which showcased different international cartoons). The shorts included: