Haff may refer to:
People Carroll Barse Haff (1892–1947), American track and field athlete who competed in the 1912 Summer Olympics Bergljot Hobæk Haff (1925–2016), Norwegian novel writer
Places Haff, estuarine lagoon along the Southern Baltic coast Am Stettiner Haff, Amt in the district of Uecker-Randow, in Mecklenburg-Vorpommern, Germany
Other Battle of Frisches Haff Haff disease Holland Animation Film Festival