Walter Fisher may refer to:
- Walter Fisher (MP), Member of Parliament for Hythe
- Walter Fisher (medical missionary), (1865–1935) medical missionary to Zambia
- Walter Fisher (professor) (1931–2018), American professor
- Walter H. Fisher (1849–1890), English singer and actor
- Walter Kenrick Fisher (1878–1953), American marine biologist, zoologist and illustrator
- Walter L. Fisher (1862–1935), United States Secretary of the Interior