Gertz is a surname. Notable people with the surname include:
- Alejandro Gertz Manero (born 1939), Mexican politician and lawyer
- Alison Gertz (1966–1992), AIDS activist
- Bill Gertz, (born 1952), American editor, columnist and reporter for The Washington Times
- Elmer Gertz (1906–2000), American lawyer, writer and civil rights activist
- Irving Gertz (1915–2008), American composer
- Jami Gertz (born 1965), American actress
- Marc Gertz, American criminologist
- Nurith Gertz (born 1940), Israel professor of Hebrew literature and film
- Wanda Gertz (1896–1958), Polish army officer