Waldo (surname)
Waldo is the surname of:
- Clarence Abiathar Waldo, American mathematician, author, and educator
- Daniel Waldo, veteran of the American Revolutionary War, missionary and U.S. House clergyman
- Daniel Waldo , American legislator in the Provisional Government of Oregon
- Dr. Dwight B. Waldo, first president of Western Michigan University
- Dwight Waldo, American political scientist
- Edward Hamilton Waldo, birth name of American science fiction author Theodore Sturgeon
- George E. Waldo, American politician
- Janet Waldo, American actress and voice artist
- Jim Waldo, computer scientist and software architect
- John B. Waldo, jurist and conservationist in Oregon, United States
- Octavia Waldo, American writer
- Peter Waldo, founder of a Christian sect called the Waldensians
- Rhinelander Waldo, former U.S. Army captain, Fire and later Police Commissioner of New York City
- Samuel Waldo , Massachusetts land speculator, soldier and political figure
- Samuel Lovett Waldo, American painter
- William Waldo
- William Waldo
