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:
“Science is the knowledge of many, orderly and methodically
digested and arranged, so as to become attainable by one. The
knowledge of reasons and their conclusions constitutes abstract, that of causes and their effects, and of the laws of nature, natural science.”
—John Frederick William Herschel (1792–1871)