Polka Party! is the fourth studio album by the American parody musician "Weird Al" Yankovic, released on October 21, 1986. The album was produced by former The McCoys guitarist Rick Derringer. Recorded between April and September 1986, the album was Yankovic's follow-up to his successful 1985 release, Dare to Be Stupid. The album's lead single, "Living With a Hernia", failed to chart.

The music on Polka Party! is built around parodies and pastiches of pop and rock music of the mid-1980s, featuring direct parodies of James Brown, Mick Jagger, El DeBarge and Robert Palmer. The album also features many "style parodies", or musical imitations that come close to, but do not copy, existing artists. These style parodies include imitations of specific artists like Talking Heads, as well as imitations of various musical genres like country music.

Peaking at No. 177 on the Billboard 200, Polka Party! was met with mixed-to-negative reviews and was considered a commercial and critical failure. Despite this, the album was nominated for a Grammy Award for Best Comedy Recording in 1988. Polka Party! is one of Yankovic's few studio albums not to be certified either Gold or Platinum by the Recording Industry Association of America (RIAA).