Rex Robert Brown (born July 27, 1964 in Graham, Texas) is an American heavy metal bassist. Currently a member of Down, he is most famous as the longtime bassist for the Grammy-nominated, platinum-selling band Pantera.

Stuff he has done:
With Jerry Cantrell (1998)

* "Dickeye," "My Song," "Keep the Light On," "Satisfy," and "Hurt a Long Time" for Boggy Depot

With Cavalera Conspiracy (2008)

* "Ultra-Violent" for Inflikted

With Crowbar (2004-2005)

* Lifesblood for the Downtrodden (Bass and Producer)

With Down (1999-present)

* Down II: A Bustle in Your Hedgerow (2002)
* Down III: Over the Under (2007)
* NOLA (remastered) (2008)

With Pantera (1982-2003)

* Metal Magic (1983)
* Projects In The Jungle (1984)
* I Am The Night (1985)
* Power Metal (1988)
* Cowboys from Hell (1990)
* Vulgar Display of Power (1992)
* Far Beyond Driven (1994)
* The Great Southern Trendkill (1996)
* Official Live: 101 Proof (1997)
* Reinventing the Steel (2000)

With Rebel Meets Rebel (2000-2003)

* Rebel Meets Rebel (2006)