Alf Wollebæk (8 January 1879 – 9 March 1960) was a Norwegian zoologist and curator.

His elder brother was jurist and diplomatist Johan Wollebæk (1875–1940).

[1] After graduating in Fredrikstad in 1898, he received a job at the experimental station in Drøbak with marine biologist Johan Hjort (1869–1948).

He was decorated Commander of the Latvian Order of the Three Stars in 1937, and with the King's Medal of Merit in gold in 1959.

[1][2] The species Zalophus wollebaeki – Galápagos sea lion – is named after him.