Gary George Pateman (b. December 8, 1952) was Chief Minister of West Mainland from March to July 2004. He defeated Tom Southwell in a ballot for the leadership of the state Liberal Democratic Party on March 17, but was defeated at the general election in July that year. He resigned from the leadership but not from the legislature, and remains a member of that body. He has also written extensively for a variety of sources.
| Position | 2nd Chief Minister of West Mainland |
| Term in office | March 17, 2004 - July 26, 2004 |
| Preceded by | Tom Southwell |
| Succeeded by | Luke Backen |
| Political party | Liberal Democrat |
| Total time in office | 4m, 9d |
| Born | 8th December 1952 |
| Partner | Annie Pateman (since 1977) |
| Preceded by Tom Southwell |
Chief Minister of West Mainland March 17, 2004 - July 26, 2004 |
Succeeded by Luke Backen |