Hans Jacob Hansen (10 August 1855 – 26 June 1936) was a Danish zoologist, known for his contributions to carcinology (the study of crustacea). He was born in Bellinge and died in Gentofte. He participated on the first year of the Ingolf expedition to Iceland and Greenland in 1895.^[1]

• Biographical Etymology of Marine Organism Names – H.

• David M. Damkaer (1995). "Hans Jacob Hansen (10 August 1855 – 26 June 1936)". Journal of Crustacean Biology. 15 (4): 795–796. JSTOR 1548829.