One in a Million is the second studio album by American singer Aaliyah. It was first released on August 27, 1996, by Blackground and Atlantic Records.

The album was recorded from August 1995 to July 1996 with a variety of producers including Timbaland, Missy Elliott, Carl-So-Lowe, J. Dibbs, Jermaine Dupri, Kay Gee, Vincent Herbert, Rodney Jerkins, Craig King, Darren Lighty and Darryl Simmons, and within a few months, the album proved Aaliyah's breakthrough and a major milestone in the careers of Elliott and Timbaland. The album featured several guest vocalists, including Elliott, Timbaland, Treach and Slick Rick.

One in a Million garnered generally positive reviews from music critics, including Rolling Stone who named it the 90th best album of the decade. It was also listed as one of 33 hip-hop/R&B albums in Rolling Stone's "Essential Recordings of the '90s".