Dian is a unisex given name. Notable people with the name include:
People: Dian Agus Prasetyo (born 1985), Indonesian footballer Dian Bachar (born 1970), American actor Dian Fossey (1932–1985), American zoologist who studied gorillas Dian Genchev (born 1975), Bulgarian footballer Dian HP (born 1965), Indonesian composer Dian Inggrawati (born 1984), deaf Indonesian beauty queen Dian Kateliev (born 1980), Bulgarian footballer
Dian Moldovanov (born 1985), Bulgarian footballer Dian Nissen, American trampolinist, fitness professional, and daughter of the inventor of the trampoline Dian Sastrowardoyo (born 1982), Indonesian actress and model Dian Slavens (born 1958), American politician
Mythological or fictional characters: Dian Cecht, the god of healing in Irish mythology Dian Alberts, on the Dutch soap opera Goede tijden, slechte tijden Dian Belmont, a DC Comics character
See also Diane (given name)