Osterhaus may refer to:
People Ab Osterhaus (born 1948), leading Dutch virologist, veterinarian and influenza expert Hugo Osterhaus (1851–1927), American admiral Peter Joseph Osterhaus (1823–1917), Prussian general in the Union Army in the American Civil War Robert Osterhaus (born 1931), American politician
Other uses USS Osterhaus, United States Navy vessel during World War II
See also Osterhausen, Saxony-Anhalt, Germany Østerhus, a village in Grimstad, Norway