| Mark Seale | |
| Birth Date: | 1960 3, mf=yes |
| Birth Place: | Halifax, Nova Scotia, Canada |
| Status: | retired |
| Import: | no |
| Position1: | Defensive tackle |
| College: | University of Richmond |
| Amateur Title: | CJFL |
| Amateur Team: | Ottawa Sooners |
| High School: | Sir Wilfrid Laurier Secondary School (Ottawa) |
| Cfldraftedyear: | 1982 |
| Cfldraftedround: | Territorial exemption |
| Nfldraftedyear: | 1982 |
| Nfldraftedround: | 12 |
| Nfldraftedpick: | 323 |
| Playing Years1: | 1982–1984 |
| Playing Team1: | Ottawa Rough Riders |
| Playing Years2: | 1985–1986 |
| Playing Team2: | Toronto Argonauts |
| Playing Years3: | 1987–1988 |
| Playing Team3: | Winnipeg Blue Bombers |
Donald "Mark" Seale (born March 10, 1960) is a former professional Canadian football defensive lineman who played seven seasons in the Canadian Football League (CFL) for three teams.
Seale was selected as a territorial exemption by the Ottawa Rough Riders in the 1982 CFL Draft. He was also the 12th round selection of the New York Giants in the 1982 NFL draft.[1]
Seale attended Sir Wilfrid Laurier Secondary School in Ottawa, Ontario, where he lettered in both hockey and football. He also played for the Ottawa Sooners for two seasons[2] before attending the University of Richmond in Virginia, where he earned a Bachelor of Arts degree in 1982.