| Medal record | ||
|---|---|---|
| Men's canoe sprint | ||
| World Championships | ||
| Bronze | 1981 Nottingham | K-4 1000 m |
| Bronze | 1982 Belgrade | K-2 500 m |
| Bronze | 1982 Belgrade | K-4 1000 m |
Matthais Seack (born July 28, 1962) is a West German sprint canoer who competed in the early to mid 1980s. He won three bronze medals at the ICF Canoe Sprint World Championships, earning them in the K-2 500 m (1982) and the K-4 1000 m (1981, 1982).
Seack also competed at the 1984 Summer Olympics in Los Angeles, finishing fifth in the K-2 1000 m and seventh in the K-2 500 m events.