King Frederick may refer to:
- Frederick I of Denmark
- Frederick II of Denmark
- Frederick III of Denmark
- Frederick IV of Denmark
- Frederick V of Denmark
- Frederick VI of Denmark
- Frederick VII of Denmark
- Frederick VIII of Denmark
- Frederick IX of Denmark
- Frederick I of Sweden
- Frederick I of Prussia, previously Frederick III, Elector of Brandenburg
- Frederick II of Prussia, Frederick the Great
- Frederick III, German Emperor, also King Frederick III of Prussia
- Frederick I of Württemberg (1754–1816)
In addition, a number of kings of Prussia were named Frederick William:
- Frederick William I of Prussia (1688–1740)
- Frederick William II of Prussia {1744–1797)
- Frederick William III of Prussia (1770–1840)
- Frederick William IV of Prussia (1795–1861)
Famous quotes containing the words king and/or frederick:
“Not Solomon, for all his wit,
Nor Samson, though he were so strong,
No king nor person ever yet
Could ‘scape, but death laid him along:”
—Robert Southwell (1561?–1595)
“It’s a pity you didn’t know when you started your game of murder, that I was playing, too.”
—Robb White, and William Castle. Frederick Loren (Vincent Price)