1978 Seattle Mariners season
| 1978 Seattle Mariners | |
|---|---|
| League | American League |
| Division | West |
| Ballpark | Kingdome |
| City | Seattle, Washington |
| Record | 56–104 (.350) |
| Divisional place | 7th |
| Owners | Danny Kaye |
| General managers | Lou Gorman |
| Managers | Darrell Johnson |
| Television | KING-TV 5 |
| Radio | KVI 570 AM (Dave Niehaus, Ken Wilson) |
The 1978 Seattle Mariners season was the second in franchise history. The Mariners ended the season by finishing seventh in the American League West with a record of 56–104 (.350).