| Dain Clay | |
| Position: | Outfielder |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 10 July 1919 |
| Birth Place: | Hicksville, Ohio, U.S. |
| Death Place: | Chula Vista, California, U.S. |
| Debutleague: | MLB |
| Debutdate: | June 12 |
| Debutyear: | 1943 |
| Debutteam: | Cincinnati Reds |
| Finalleague: | MLB |
| Finaldate: | September 29 |
| Finalyear: | 1946 |
| Finalteam: | Cincinnati Reds |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .258 |
| Stat2label: | Home runs |
| Stat2value: | 3 |
| Stat3label: | Runs batted in |
| Stat3value: | 98 |
| Teams: |
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Dain Elmer Clay (July 10, 1919 – August 28, 1994) was an American Major League Baseball outfielder. He played for the Cincinnati Reds of the National League. Clay played collegiately at Kent State University in 1943. He played in four seasons with the Reds, from to . In, Clay led the National League in at-bats with 656, and was sixth in games played, with 153. In 433 games, Clay was a career hitter (397-for-1540) with 3 home runs and 98 runs batted in.