"Jam" is a song by the American singer and songwriter Michael Jackson, released in June 1992 by Epic Records as the fourth single from his eighth album, Dangerous (1991). It was co-written and co-produced by Jackson with René Moore, Bruce Swedien and Teddy Riley.

"Jam" is a new jack swing song whose bridge features a rap verse performed by Heavy D (of the group Heavy D & the Boyz). The music video of the song featured NBA basketball legend Michael Jordan. The song was also featured on the Chicago Bulls (Jordan's team at the time)'s 1992 NBA Championship video "Untouchabulls" and was also used in many promotional ads of the NBA.

"Jam" was a Top 40 hit across the world, peaking at number 26 on the US Billboard Hot 100. It received generally positive reviews by critics and received two Grammy Award nominations. The song re-entered the UK Singles Chart in 2006, reaching number 22. In the same year, it also reached number one in Spain.

It also appears as the second track on his 2009 This Is It compilation album. The single was re-released in 2006 as part of Jackson's Visionary: The Video Singles collection campaign, and it was remixed to the Cirque du Soleil's Immortal World Tour, releasing that remix on the soundtrack album.

"Jam" began as a fast-paced experimental demo titled "Time Marches On" recorded by Bruce Swedien and René Moore for the latter's planned solo album. The track underwent multiple early iterations in the studio, with the looped drum beat being slowed down and further built up with elements including Swedien's sleigh bells. Swedien and Moore presented the finished beat to Jackson, who loved it and decided to use it for Dangerous. Jackson later gave the drum beat to Teddy Riley, who further embellished it with keyboards, horn stabs and guitar parts to develop the final backing track, and Jackson wrote the lyrics.

"Jam" was generally well received by music critics. Larry Flick from Billboard magazine wrote that the song "is fortified with brassy horns, a funky bass line, and a rap cameo by Heavy D. Jackson's signature squeals and whoops are at home within an urgent groove that seems to goad him to the point of catharsis." Andrew Smith from Melody Maker described it as "lean" and "spikey". Pan-European magazine Music & Media commented, "Get in the groove with the most funky track on the Dangerous album." An editor from People Magazine felt Jackson "captures the outer style but not the energizing spirit of hip-hop."

Alan Light from Rolling Stone praised the song, adding that it "addresses Jackson's uneasy relationship to the world and reveals a canny self-awareness that carries the strongest message on Dangerous." He wrote further, "Though it initially sounds like a simple, funky dance vehicle, Jackson's voice bites into each phrase with a desperation that urges us to look deeper. He is singing as 'false prophets cry of doom' and exhorts us to 'live each day like it's the last'. The chorus declares that the miseries of the world 'ain't too much stuff' to stop us from jamming. To Jackson, who insists that he comes truly alive only onstage, the ability to 'Jam' is the sole means to find 'peace within myself', and this hope rings more sincere than the childlike wishes found in the ballads." Ted Shaw from The Windsor Star noted that Jackson's voice is treated electronically on the track, "which establishes the thematic thrust in lyrics that call for brotherly love."

In a 2016 retrospective review, Chris Lacy from Albumism said that on the song, Jackson "explains that jamming (the joy of music and dance) is his preferred method of temporarily escaping worldly issues." AllMusic editor Stephen Thomas Erlewine wrote that there's a lot to be said for professional craftsmanship at its peak and he called this song blistering plus highlight on album. Adam Gilham of Sputnikmusic described the song as a perfect album opener and rated it "5/5".