Viðar is an Icelandic given name and surname. Notable people with the name include:

Atli Viðar Björnsson (born 1980), Icelandic footballer

Viðar Halldórsson (born 1953), Icelandic footballer

Viðar Örn Kjartansson (born 1990), Icelandic footballer

See also

Víðarr