| Guy Lacy | |
| Position: | Second baseman |
| Birth Date: | 12 June 1897 |
| Birth Place: | Cleveland, Tennessee |
| Death Place: | Cleveland, Tennessee |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | MLB |
| Debutdate: | May 7 |
| Debutyear: | 1926 |
| Debutteam: | Cleveland Indians |
| Finalleague: | MLB |
| Finaldate: | August 17 |
| Finalyear: | 1926 |
| Finalteam: | Cleveland Indians |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .167 |
| Stat2label: | Home runs |
| Stat2value: | 1 |
| Stat3label: | RBI |
| Stat3value: | 2 |
| Teams: |
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Osceola Guy Lacy (June 12, 1897 in Cleveland, Tennessee – November 19, 1953) was a second baseman in Major League Baseball. He played for the 1926 Cleveland Indians.
He was a manager in the minor leagues from 1926 to 1941, winning league championships in 1931, 1934 and 1940.