Gustaf

Gustaf Johansen is a sailor in H. P. Lovecraft's short story "The Call of Cthulhu". He is the second mate of the schooner, Emma, which sinks after being attacked by the Cthulhu cultists on the steam yacht Alert. After commandeering the Alert, he landed on an unknown island in the Pacific Ocean, later identified by the narrator as R'lyeh. He later wrote a manuscript in English based on his experiences at R'lyeh and his encounter with Cthulhu before his mysterious death.

Gustaf Skarsgård (b. 1980) is a Swedish actor. Son of Stellan Skarsgård and younger brother of Alexander Skarsgård.

Two famous bearers:
- Cartoon cat Garfield is called Gustaf in Sweden.
- Carl XVI Gustaf, king of Sweden.