Igor Pretnar
- Birthday: 1924-04-03
- Deathday: 1977-04-08
- Place of birth: Ljubljana, Slovenia, Yugoslavia [now Slovenia]
- Also know as: Игор Претнар
Igor Pretnar (3 April 1924 – 8 April 1977) was a Slovenian film director. Pretnar won the Golden Arena for Best Director for his film Wild Growth (Samorastniki, 1963) at the 1963 Pula Film Festival. His 1976 film Idealist was entered into the 10th Moscow International Film Festival.
