| Bill Lamar | |
| Position: | Left fielder |
| Birth Date: | 21 March 1897 |
| Birth Place: | Rockville, Maryland, U.S. |
| Death Place: | Rockport, Massachusetts, U.S. |
| Bats: | Left |
| Throws: | Right |
| Debutleague: | MLB |
| Debutdate: | September 19 |
| Debutyear: | 1917 |
| Debutteam: | New York Yankees |
| Finalleague: | MLB |
| Finaldate: | August 6 |
| Finalyear: | 1927 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .310 |
| Stat2label: | Home runs |
| Stat2value: | 19 |
| Stat3label: | Runs batted in |
| Stat3value: | 245 |
| Teams: |
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William Harmong Lamar [Good Time Bill] (March 21, 1897 – May 24, 1970) was a left fielder in Major League Baseball who played from 1917 through 1927 for the New York Yankees, Boston Red Sox, Brooklyn Robins, and Philadelphia Athletics. Listed at, 185 lb., Lamar batted left-handed and threw right-handed. He was born in Rockville, Maryland.
In a nine-season career, Lamar was a .310 hitter (633-for-2040) with 19 home runs and 245 RBI in 550 games, including 303 runs, 114 doubles, 23 triples, 25 stolen bases, and a 1.10 walk-to-strikeout ratio (86-to-78).
Lamar died in Rockport, Massachusetts at age 73.