| Jim Westlake | |
| Position: | Pinch hitter |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 3 July 1930 |
| Birth Place: | Sacramento, California |
| Death Place: | Sacramento, California |
| Debutleague: | MLB |
| Debutdate: | April 16 |
| Debutyear: | 1955 |
| Debutteam: | Philadelphia Phillies |
| Finalleague: | MLB |
| Finaldate: | April 16 |
| Finalyear: | 1955 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Games played |
| Stat1value: | 1 |
| Stat2label: | At bats |
| Stat2value: | 1 |
| Stat3label: | Hits |
| Stat3value: | 0 |
| Teams: | |
James Patrick Westlake (July 3, 1930 – January 3, 2003) was a Major League Baseball player. Westlake played for the Philadelphia Phillies in . In one game, Westlake had no hits in one career at-bat. He batted and threw left-handed. His brother is former player Wally Westlake.
Jim graduated from C. K. McClatchy High School in Sacramento, CA in 1948. He had one at bat for the Philadelphia Phillies on April 16, 1955 at the Polo Grounds in New York City against the New York Giants (baseball). He came into the game as a pinch-hitter in the top of the 9th inning as the first batter hitting for relief pitcher Jack Spring. Jim Hearn was the pitcher for the Giants and struck out Westlake in his only Major League at-bat.
Westlake was born and died in Sacramento, California.