Gary "Mani" Mounfield (16 November 1962 – c. 20 November 2025) was an English bassist, best known for being a member of the rock bands the Stone Roses and Primal Scream.

He joined the Stone Roses in 1987 and played on both their albums before the group disbanded in 1996. Later that year, he became the full-time bassist for Primal Scream, performing on all five albums from Vanishing Point (1997) to Beautiful Future (2008). He left Primal Scream in 2011 to participate in the Stone Roses' reunion; the band broke up for a second time in 2017.