Krieger (German, 'warrior') is a surname. Notable people with the surname include:

People

• Adam Krieger (1634–1666), German Baroque composer
• Albert Krieger (1923–2020), American attorney
• Ali Krieger, American soccer player
• Andreas Krieger (born 1966), German athlete
• Andreas Frederik Krieger (1817–1893), Danish politician
• Byron Krieger (1920–2015), American Olympic fencer
• Cornell Krieger, American soccer player
• Earl Krieger (1896–1960), American college sports coach
• Eduard Krieger (1946–2019), Austrian footballer
• Eduardo Krieger (born 1928), Brazilian physician
• Gerhard Johannes Krieger, German engineer
• Hans Krieger (1933–2023), German writer
• Harold G. Krieger (1926–1995), American politician and judge
• Helmut Krieger (born 1958), Polish shot putter
• Henry Krieger (born 1945), American composer
• Holly Krieger, American mathematician
• Johan Cornelius Krieger (1683–1755), Danish architect
• Johann Krieger (1651–1735), German Baroque composer and brother to Johann Philipp
• Johann Nepomuk Krieger (1865–1902), Bavarian selenographer
• Johann Philipp Krieger (1649–1725), German Baroque composer
• Joseph Krieger (born 1986), Australian-rules footballer
• Kurt Krieger (1926–1970), Austrian-American baseball player
• Leonard Krieger (1918-1990), American historian
• Louis Charles Christopher Krieger (1873–1940) American mycologist and illustrator
• Martin Harvey Krieger (born 1944), American physicist and professor of urban planning and public policy
• Mike Krieger (born 1986), Brazilian-American entrepreneur and Instagram co-founder
• Murray Krieger (1923–2000), American literary critic
• Pascal Krieger (born 1945), Swiss martial artist
• Robby Krieger (born 1946), American guitarist
• Solly Krieger (1909–1964), American boxer
• Tyler Krieger (born 1994), American baseball player
• Ulrich Krieger (born 1962), German musician
• Wolfgang Krieger (born 1940), German mathematician

Fictional characters

• Artix von Krieger, a character from multiple Artix Entertainment video games.
• Courtney A. Krieger, a character from G.I. Joe: A Real American Hero
• Dr. Algernop Krieger, head of the ISIS applied research department in Archer (TV series)
• Franz Krieger, the secondary antagonist of the 1996 spy action thriller film Mission: Impossible