Trudy (or variations thereof) is a common English given name and may refer to:
People:
- "Trudy", childhood nickname of swimmer Gertrude Ederle (1905–2003)
- Trudi Canavan (born 1969), Australian fantasy writer
- Trudy H. Clark, United States Air Force major general
- "Trudie", nickname of Gertrude Denman, Baroness Denman (1884–1954), British women's rights activist
- Trudie Goodwin (born 1951), English actress
- Trudy Marshall (1920–2004), American actress
- Trudy McCaffery (1944–2007), thoroughbred racehorse owner and breeder
- Trudy Stevenson (born 1944), Zimbabwean politician and ambassador to Senegal
- Trudie Styler (born 1954), English actress and producer, wife of the musician Sting
Fictional characters:
- Trudy, from Disney Comics
- Trudy Chacón, from Avatar (2009 film)
- Trudy, from the TV series The Tribe (1999–2003)
- Trudy Monk, from the TV series Monk
- Trudy Joplin, from the TV series Miami Vice
- Trudy Campbell, from the TV series Mad Men
- Trudy Proud, from the TV series The Proud Family
Other uses:
- 22900 Trudie, an asteroid
- Trudy (comic strip), an American comic strip
- "Trudy", a Charlie Daniels Band song from the 1974 Fire on the Mountain (album)