Sonan may refer to:
Jinhaku Sonan (楚南 仁博 1892–1984) a Japanese entomologist Sonan's salamander, Hynobius sonani, a salamander in the family Hynobiidae, endemic to Taiwan, where it occurs in the Central Mountain Range "Sōnan" (遭難 "Distress"), the second single by Japanese rock band Tokyo Jihen
See also Sonans, Virginia, an unincorporated community in Pittsylvania County