| Bob Clasby | |
| Number: | 91, 98, 79 |
| Position: | Defensive tackle Defensive end |
| Birth Date: | 28 September 1960 |
| Birth Place: | Detroit, Michigan, U.S. |
| Height Ft: | 6 |
| Height In: | 5 |
| Weight Lb: | 260 |
| High School: | Boston College (Boston, Massachusetts) |
| College: | Notre Dame |
| Draftyear: | 1983 |
| Draftround: | 9 |
| Draftpick: | 236 |
| Pastteams: |
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| Statlabel1: | Sacks |
| Statvalue1: | 14.5 |
| Statlabel2: | Fumble recoveries |
| Statvalue2: | 2 |
| Statlabel3: | Interceptions |
| Statvalue3: | 1 |
| Pfr: | ClasBo20 |
Robert James Clasby (born September 28, 1960) is a former American football defensive lineman who played five seasons in the National Football League (NFL). He was selected by the Seattle Seahawks in the ninth round of the 1983 NFL draft, after playing college football for Notre Dame. He played for five seasons in the NFL for the St. Louis/Phoenix Cardinals.