Kurt Sieveking (21 December 1897, Hamburg – 16 March 1986, Hamburg) was a German politician (CDU) and First Mayor of Hamburg. In his position as the head of a German state, he was serving as President of the Bundesrat in 1956–1957.
Sieveking was from a well known Hamburg family, his great-granduncle Friedrich Sieveking preceded him in office as First Mayor in the 1860s. Many streets and places in Hamburg were named after them: e.g. Sievekingsallee, Sievekingdamm or Sievekingsplatz (53°33'19"N 9°58'34"E).
In 1951, Sieveking was appointed as the consul in Stockholm and later ambassador in Sweden. In 1953, Sieveking was the canditate of the conservative parties for the office of the First Mayor. He won the election, in his office term he reformed the school system and initiated the town twinning with Saint Petersburg (then Leningrad) in 1957. After the election defeat he remained member of the Hamburg Parliament.
Sieveking is buried at the Ohlsdorf Cemetery (S25 T25 [11–19]).