Raška (feminine: Rašková) is a Czech surname. There are several theories as to how it might have originated: from the name Raš, which originated as an abbreviation of names beginning with Ra- (Radek, Radim, etc.); from the German adjective rasch ('quick', 'swift'); from the word raška, formerly coloquially used for the birds whinchat, robin and redstart; from the word raška, i.e. 'old woman' dialectically; or from Raschau in Saxony. Notable people with the surname include:
Adam Raška (ice hockey, born 1994), Czech ice hockey player
Adam Raška (ice hockey, born 2001), Czech ice hockey player
Jiří Raška (1941–2012), Czech ski jumper
Karel Raška (1909–1987), Czech medical doctor and epidemiologist
Martin Raška (born 1977), Czech footballer