Frederick IV may refer to:
- Frederick IV of Sicily (1341–1377)
- Frederick IV of Austria (1382–1439)
- Frederick IV of Naples (1452–1504)
- Frederick IV, Elector Palatine (1574–1610)
- Frederick IV of Holstein-Gottorp (1671–1702)
- Frederick IV of Denmark (1671–1730)
Famous quotes containing the word frederick:
“For should your hands drop white and empty
All the toys of the world would break.”
—John Frederick Nims (b. 1913)