- Count Olaf, a fictional character and the main antagonist in the series of novels A Series of Unfortunate Events by Lemony Snicket
- Olaf, a fictional character in Jungle Jam and Friends: The Radio Show!
- Olaf the Troll, a fictional character in "Buffy the Vampire slayer teleseries he appears in the episode Triangle, played by Abraham Benrubi
- Olaf, an anthropomorphic snowman in Disney's 2013 animated film Frozen.
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