Jellinek is a surname and may refer to:
- Adolf Jellinek (1821 – 1893), an Austrian rabbi and scholar.
- Max Hermann Jellinek (1868 – 1938), son of Adolf Jellinek
- E. Morton Jellinek (1890 – 1963) a psychologist and researcher into alcoholism
- Emil Jellinek-Mercedes (1853 – 1918), an automobile entrepreneur, son of Adolf
- Georg Jellinek (1851 – 1911), philosopher
- George Jellinek (1919 – 2010), broadcaster, expert in classical music, especially vocal