Mickey's Birthday Party is an American animated short film directed by Riley Thomson, produced by Walt Disney Productions and distributed by RKO Radio Pictures. The 114th short to feature Mickey Mouse, it was released on February 7, 1942. The animated film was directed by Riley Thomson and animated by Les Clark, James Moore, Ken Muse, Armin Shaffair, Riley Thompson, Bernie Wolf, and Marvin Woodward. It was the 116th short in the Mickey Mouse film series to be released, and the first for that year.

The Birthday Party is a Mickey Mouse short animated film first released on January 2, 1931, as part of the Mickey Mouse film series. It was the twenty-fifth Mickey Mouse short to be produced, the first of that year.