Ohlin is a Swedish surname. Notable people with the surname include:
Alix Ohlin, Canadian writerAxel Ohlin (1867–1903), Swedish zoologist and explorerBertil Ohlin (1899–1979), Swedish economist and politicianJörgen Ohlin (1937–2013), Swedish footballerLisa Ohlin (born 1960), Swedish screenwriter and directorLloyd Ohlin (1918–2008), American sociologist and criminologistMattias Ohlin (born 1978), Swedish swimmerPer "Dead" Ohlin (1969–1991), Swedish singerSture Ohlin (born 1935), Swedish biathlon competitor