Rudolph the Red-Nosed Reindeer is a 1964 stop motion Christmas animated television special produced by Videocraft International, Ltd. It first aired December 6, 1964, on the NBC television network in the United States and was sponsored by General Electric under the umbrella title of The General Electric Fantasy Hour. The special was based on the 1949 Johnny Marks song "Rudolph, the Red-Nosed Reindeer" which was itself based on the poem of the same name written in 1939 by Marks's brother-in-law, Robert L. May. The concept was developed in New York City, the animation was done in Japan, the music was recorded in England, and most of the voice actors were from Canada. The production was completed in 18 months.

NBC began airing the special annually again in 2024, having previously done so from 1964 to 1971. From 1972 to 2023, the special aired on CBS, which unveiled a high-definition, digitally remastered version of the program in 2005, re-scanned frame-by-frame from the original 35 mm film elements. As with A Charlie Brown Christmas and How the Grinch Stole Christmas, Rudolph the Red-Nosed Reindeer no longer airs merely once annually, but several times during the Christmas and holiday season. It has been telecast every year since 1964, making it the longest continuously running Christmas TV special in the United States. The 50th anniversary of the television special was marked in 2014, and a series of postage stamps featuring Rudolph was issued by the United States Postal Service on November 6, 2014. A special exhibit was also mounted at the Masterworks Museum in Bermuda, where the original puppets are held. Since 2019, Freeform has aired the special as a part of its 25 Days of Christmas holiday programming block.

Rudolph the Red-Nosed Reindeer was initially met with a positive reception among critics, who praised the voice acting, soundtrack, animation style, characters, and sets. Rudolph the Red-Nosed Reindeer is often regarded as one of the best Christmas films ever made, being featured on numerous "top ten" lists. It has become widely popular among both young children and adults familiar with the Christmas season, and has garnered a large cult following since its initial debut.