# List of 1978 Seattle Mariners draft picks

The following is a list of 1978 Seattle Mariners draft picks. The list includes the June regular draft (Rule 4 draft), the June secondary draft, and the January regular draft, and January secondary draft. In all of the drafts, the Mariners made 34 selections, including 12 pitchers, 6 catchers, 5 outfielders, 3 utility players, 3 shortstops, 2 first basemen, 1 infielder, 1 third baseman, and 1 second baseman. Six players drafted by the Mariners in 1978 went on to play in Major League Baseball.

## Drafts
### Key

| Round (Pick) | Indicates the round and pick the player was drafted |
| Position | Indicates the secondary/collegiate position at which the player was drafted, rather than the professional position the player may have gone on to play |
| * | Indicates the player made an appearance in Major League Baseball |

### June regular draft

| Round (Pick) | Name | Position | School |
| 1 (6) | Tito Nanni | First baseman / Outfielder | Chestnut Hill Academy |
| 2 (32) | Dave Valle | Catcher | Holy Cross High School |
| 2 (34) | Rich Naumann | Left-handed pitcher | Bay High School |
| 3 (38) | Rob Simond | Left-handed pitcher | Southern Illinois University |
| 4 (84) | Ron McGee | Right-handed pitcher | Lincoln High School |
| 5 (110) | Werner Lajszky | Catcher | Mater Christi High School |
| 6 (136) | Doug Smith | Right-handed pitcher | University of Oklahoma |
| 7 (162) | Jack Hobbs | Pitcher | Lynchburg College |
| 8 (188) | Lazoro Santin | Pitcher | Rochester Adams High School |
| 9 (214) | Richard Graser | Left-handed pitcher | Fort Vancouver High School |
| 10 (240) | Bob Stoddard | Right-handed pitcher | Fresno State University |
| 11 (266) | Vance McHenry | Shortstop | University of Nevada, Las Vegas |
| 12 (292) | Terry Mixon | Shortstop | Georgia Southern University |
| 13 (318) | Bill Kampen | Pitcher | — |
| 14 (344) | Rob Pietroburgo | Left-handed pitcher | University of Missouri |
| 15 (370) | Harry Mauch | Outfielder | Southern Oregon University |
| 16 (396) | David Nowland | Shortstop | University of Tulsa |
| 17 (422) | Michael Guerra | Utility player | University of Nevada, Las Vegas |
| 18 (448) | Jerry Vasquez | Outfielder | Arizona State University |
| 19 (473) | Calvin Horhn | Outfielder | Des Moines Area Community College |
| 20 (497) | Rod Hudson | Catcher | Portland State University |
| 21 (520) | Dave Edler | Infielder | Washington State University |
| 22 (542) | Chris Flammang | Utility player | Sierra High School |

### June secondary draft

| Round (Pick) | Name | Position | School | Ref. |
| 1 (8) | Gera D. Miller | Utility player | Des Moines Area Community College | |
| 2 (31) | Scott Benedict | Catcher | Palm Beach Community College | |

### January regular draft

| Round (Pick) | Name | Position | School |
| 1 (5) | Jim Maler | First baseman | Miami Dade College |
| 2 (31) | Anthony Jordan | Right-handed pitcher | Monterey Peninsula College |
| 3 (57) | Dann Bilardello | Catcher | Cabrillo College |
| 4 (83) | Kirk Komstadius | Third baseman | Yakima Valley Community College |
| 5 (107) | Keven Miller | First baseman | Cerritos College |
| 6 (129) | Teddy Adkins | Right-handed pitcher | Palm Beach Community College |

### January secondary draft

| Round (Pick) | Name | Position | School |
| 1 (9) | Richard Alexander | Outfielder | — |
| 2 (35) | Juan Corey | Catcher | Miami Dade College |
| 3 (57) | Carlos Matamoras | Second baseman | Miami Dade College |