| Classification | Class D (1904) |
|---|---|
| Sport | Minor League Baseball |
| First season | 1904 |
| Ceased | July 6, 1904 |
| President | Unknown (1904) |
| No. of teams | 4 |
| Country | United States of America |
| Most titles | 1 Salem Raglans (1904) |
The Oregon State League was a minor league baseball league that played briefly in the 1904 season. The Class D level Oregon State League featured four teams based in Oregon and Washington. The league permanently folded midway through its first season of play, with the Salem Raglans in first place.