| Dayton Open | |
| Location: | Dayton, Ohio |
| Establishment: | 1999 |
| Course: | The Golf Club at Yankee Trace |
| Par: | 72 |
| Tour: | Nationwide Tour |
| Format: | Stroke play |
| Month Played: | July |
| Final Year: | 2003 |
| Aggregate: | 262 Todd Barranger (2001) |
| To-Par: | −26 as above |
| Final Champion: |  Guy Boros |
| Map: | USA#USA Ohio |
| Map Label: | GC at Yankee Trace |
| Map Relief: | yes |
| Map Size: | 200 |
| Coordinates: | 39.599°N -84.198°W |
The Dayton Open was a golf tournament on the Nationwide Tour from 1999 to 2003. It was played at The Golf Club at Yankee Trace, in the Dayton, Ohio suburb of Centerville.
The purse in 2003 was $450,000, with $81,000 going to the winner.
| Year | Winner | Score | To par | Margin of victory | Runner(s)-up | |
|---|---|---|---|---|---|---|
| Dayton Open | ||||||
| 265 | −23 | 3 strokes | Zach Johnson | |||
| 265 | −23 | 3 strokes | Todd Barranger Marco Dawson | |||
| Buy.com Dayton Open | ||||||
| 262 | −26 | 1 stroke | Bo Van Pelt | |||
| 276 | −12 | Playoff | Chris Smith | |||
| Nike Dayton Open | ||||||
| 268 | −20 | 1 stroke | Brian Tennyson | |||