Northern Star is the debut solo album released by English singer Melanie C, released on 18 October 1999 by Virgin Records. Chisholm and her team recruited several producers to work with her, including William Orbit, Rick Nowels, Marius de Vries, and Craig Armstrong, as well as Rick Rubin. Chisholm co-wrote every song on Northern Star's track listing.

The album's sound is diverse, combining pop music with elements of rock, dance, electronica, trance, techno-rock and R&B which contrasted with the sound of the Spice Girls. AllMusic describes "Northern Star" as a "genre-hopping" album. Commercially, the album peaked at number one on the Swedish Albums Chart and entered the top ten in several countries including Denmark, Finland, Germany, Ireland, the Netherland, and Norway. In the United Kingdom, Northern Star reached number four on the UK Albums Chart and went on to sell almost 900,000 copies. With worldwide sales close to 2.5 million copies, it is the biggest-selling solo Spice Girl album. The album was re-issued on 21 August 2000 to feature the single mixes of "Never Be the Same Again" and "I Turn to You", after the success of both singles.