Birk is both a surname and a masculine given name. Notable people with the name include:
Surname:
Ado Birk (1883–1942), Estonian former Prime MinisterAlma Birk (1917–1996), English journalist and politicianAnne Birk (1942–2009), German writerMatt Birk (born 1976), American professional football playerRaye Birk (born 1943), American actorThomas Birk (born 1988), German footballerYehudith Birk (1926–2013), Polish-born Israeli biochemistGiven name:
Birk Anders (born 1964), German biathleteBirk Engstrøm (born 1950), Norwegian footballerBirk Sproxton (1943–2007), Canadian poet and novelistFictional character:
Birk Balthazar, father of Sofia the First