Santa Claus Is Comin' to Town is a 1970 American stop-motion Christmas television special produced by Rankin/Bass Productions in New York. The film is narrated by Fred Astaire and stars the voices of Mickey Rooney, Keenan Wynn, Robie Lester, Joan Gardner and Paul Frees, as well as an assistant song performance by the Westminster Children's Choir. The film tells the story of how Santa Claus and several Claus-related Christmas traditions came to be. It is based on the hit Christmas song, "Santa Claus Is Comin' to Town", which was written by J. Fred Coots and Haven Gillespie for Leo Feist, Inc. and introduced on radio by Eddie Cantor in 1934;, and the story of Saint Nicholas.

The special was created using Japanese stop-motion animation called "Animagic", in which all the characters are made of wood and plastic, and animated via stop-motion photography. The special was originally telecast December 13, 1970, by ABC, which continues to air the special every year, along with its sister network Freeform (as of 2022, commemorating the special's 50th anniversary), although, at times, both networks have edited the special to make room for commercials.