Sievers is a surname. Notable people with the surname include:

• Any member of the Sievers family
• Anthony John "Tony" Sievers, Australian politician
• Bryan Sievers (born 1959), American politician
• Christian Sievers (born 1969), German journalist and television presenter
• Eduard Sievers (1850–1932), German philologist
• Eduard Wilhelm Sievers (1820–1894), German Shakespeare scholar
• Emanuel von Sievers (1817-1909), Baltic German aristocrat, senator and grand master of the Russian imperial court
• Eric Sievers (born 1957), American professional football player
• Frederick William Sievers (1872–1966), American sculptor
• Henry Sievers (1874–?), American assistant printer, trade union activist and liquor store operator
• Hugo K. Sievers (1903–1972), Chilean scientist from a Hamburg merchant family
• Jacob von Sievers (1731–1808), Baltic German statesman from the Sievers family
• Jan-André Sievers (born 1987), German footballer
• Jan-Ole Sievers (born 1995), German football goalkeeper
• Johann August Carl Sievers (1762–1795), German-born botanist
• Jörg Sievers (born 1965), German footballer
• Karl-Heinz Sievers (born 1942), German long-distance runner
• Kay Sievers, German software engineer and developer of the udev device manager of Linux
• Leroy Sievers (1955–2008), American journalist
• Marie von Sievers (1867–1948), he second wife of Rudolf Steiner and one of his closest colleagues
• Mark Sievers (born 1968), American convicted murderer
• Max Sievers (1887–1944), chairman of the German Freethinkers' League
• Morris Sievers (1912–1968), Australian cricketer
• Peter von Sievers (1674–1740), Russian admiral
• Ralf Sievers (born 1961), former German football player
• Roy Sievers (1926–2017), American baseball player
• Sampson Sievers (1900–1979), Russian Orthodox Christian elder
• Teresa Sievers (1968–2015), American doctor and murder victim
• Thadeus von Sievers (1853–?), Baltic German general of the Imperial Russian Army
• Todd Sievers (born 1980), former American football placekicker
• Walther Sievers, German Commander of the III./Infanterie-Regiment 415, Knight's Cross of the Iron Cross received on 19 December 1942
• Wilhelm Sievers (1860–1921), German geographer and geologist
• Wolfgang Sievers (1913–2007), Australian photographer
• Wolfram Sievers (1905–1948), German Holocaust perpetrator and manager of the Ahnenerbe, executed for war crimes

• Seevers, a surname
• Siever, a surname
• Siewierz, a town in the Silesian Voivodeship in Poland
• Sivers (disambiguation)