Stoltenberg is a German surname. Notable people with the surname include:
Gerhard Stoltenberg (1928–2001), German politician and prime minister of Schleswig-Holstein.
Thorvald Stoltenberg (born 1931), Norwegian diplomat and former cabinet member.
Jens Stoltenberg (born 1959; son of Thorvald), 13th Secretary General of NATO.
Donald Stoltenberg (born 1927), American artist, author and teacher.
John Stoltenberg, American playwright, author, and radical feminist activist.
Jason Stoltenberg, Australian tennis player.
Robert Stoltenberg, Norwegian comedian.
Abdi Farah Mude Stoltenberg (Norwegian family) Somalian politician.
