Vidar or VIDAR may refer to:
Víðarr, Norse god Vidar, Markazi, a village in Markazi Province, Iran Vidar class minesweeper HNoMS Vidar, several vessels SK Vidar, sports club FK Vidar, sports club IL Vidar, sports club (now a part of Malvik IL) Vidar, a DC Comics supervillain Vidar Hellners (1928–2021), Swedish diplomat Frede Vidar (1911–1967), Danish-born American visual artist Video detection and ranging