is a Scandinavian, German, and Dutch given name.
Olaf may also refer to:
* Olaf, Iowa
, unincorporated community, Iowa
* European Anti-Fraud Office
* Tropical Storm Olaf
, the name of several storms, hurricanes or cyclones
* Olaf ''(Frozen)''
, a fictional character from the 2013 Disney animated film, ''Frozen''
* Count Olaf
, a fictional character from ''A Series of Unfortunate Events''
* A variant of the letter Aleph
* St. Olaf (disambiguation)
* Olave (disambiguation)