| Kathy Bald | |
| Fullname: | Katherine Ann Bald |
| Nicknames: | "Kathy" |
| National Team: | Canada |
| Strokes: | Breaststroke |
| Collegeteam: | University of Toronto |
| Birth Date: | December 19, 1963 |
| Birth Place: | Etobicoke, Ontario |
| Height: | 1.72m (05.64feet) |
| Weight: | 58kg (128lb) |
Katherine Ann Bald (born December 19, 1963) is a former competitive freestyle swimmer from Canada. She was affiliated with the University of Toronto.
Bald competed for her native country at the 1988 Summer Olympics in Seoul, South Korea. There she finished in sixth position in the women's 4x100-metre freestyle relay, with her teammates Patricia Noall, Andrea Nugent and Jane Kerr.
Bald won a gold medal in the 100-metre breaststroke and a silver in the 200-metre breaststroke at the 1982 Commonwealth Games in Brisbane, Australia. At the 1983 Pan American Games in Caracas, Venezuela, she won a gold medal in the 200-metre breaststroke, silver medals in the 100-metre breaststroke and 4x100-metre freestyle relay, and a bronze in the 100-metre freestyle.