| Cy Rheam | |
| Position: | Infielder / Outfielder |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | September 28, 1893 |
| Birth Place: | Pittsburgh, Pennsylvania, US |
| Death Place: | Pittsburgh, Pennsylvania, US |
| Debutleague: | MLB |
| Debutdate: | May 20 |
| Debutyear: | 1914 |
| Debutteam: | Pittsburgh Rebels |
| Finalleague: | MLB |
| Finaldate: | October 3 |
| Finalyear: | 1915 |
| Finalteam: | Pittsburgh Rebels |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .201 |
| Stat2label: | Home runs |
| Stat2value: | 1 |
| Stat3label: | Runs batted in |
| Stat3value: | 25 |
| Teams: | |
Kenneth Johnston Rheam (September 28, 1893 – October 23, 1947) was a professional baseball player from 1914 to 1915. He went to Indiana University of Pennsylvania. He was born in Pittsburgh, Pennsylvania and died in Pittsburgh, Pennsylvania. He played for the Pittsburgh Rebels.