Neddy or Neddie may refer to:
- Neddy Rose (born 1981), Seychellois football player
- Neddy Smith (born 1944), Australian criminal and crime writer
- Neddy Merrill, protagonist of the short story "The Swimmer" by John Cheever
- Neddy, a character who is Princess Bubblegum’s brother in the animated series Adventure Time
- Neddie Seagoon, a character in the 1950s British radio comedy show The Goon Show