Groth is a German surname. Notable people with the surname include:

• Annette Groth (born 1954), German politician
• Edward J. Groth (born 1946), American astrophysicist
• Erik Groth (born 1975), American businessman and marketing executive.
• Ernest Groth (1922–2004), baseball player
• Gary Groth (born 1954), American comic book editor, publisher, and critic
• Henrik Groth (1903–1983), Norwegian publisher and essayist
• Jacob Groth (born 1951), Danish film composer
• Jarmila Groth (born 1987), Slovak-Australian tennis player
• Jeff Groth (American football) (born 1957), American football player
• Jeff Groth (film editor), film and television editor
• Johnny Groth (1926–2021), baseball player
• Klaus Groth (1819–1899), German poet
• Martin Groth (born 1969), German football player
• Paul Heinrich von Groth (1843–1927), German mineralogist
• René Groth (born 1972), German football player
• Samuel Groth (born 1987), Australian tennis player
• Stephen Fazekas de St. Groth, Hungarian-Australia microbiologist
• Stephan Groth (born 1971), Danish musician, Apoptygma Berzerk
• Sylvester Groth (born 1958), German actor and tenor
• Wilhelm Groth (1904–1977), German physical chemist

Nikolaj Groth (born in 1994) Danish actor

• The extended Groth Strip, an image of a small region in the constellation Ursa Major