People

Frederick I, Duke of Austria (Babenberg), Duke of Austria from 1195–1198
Frederick II, Duke of Austria (1219–1246), last Duke of Austria from the Babenberg dynasty
Frederick the Fair (Frederick I of Austria (Habsburg), 1286–1330), Duke of Austria and King of the Romans

Frederick I, Elector of Brandenburg (1371–1440), also known as Frederick VI, Burgrave of Nuremberg
Frederick II, Elector of Brandenburg (1413–1470), Margrave of Brandenburg
Frederick William, Elector of Brandenburg (1620–1688), Duke of Prussia
Frederick I of Prussia (1657–1713), Elector of Brandenburg
Frederick II of Prussia (1712–1786), King of Prussia, Frederick the Great
Frederick III, German Emperor (Frederick III of Prussia, 1831–1888), German emperor and King of Prussia
Frederick William I of Prussia (1688–1740), King of Prussia
Frederick William II of Prussia (1744–1797), King of Prussia
Frederick William III of Prussia (1770–1840), King of Prussia
Frederick William IV of Prussia (1795–1861), King of Prussia

Frederick I of Denmark (1471–1533), King of Denmark and Norway
Frederick II of Denmark (1534–1588), King of Denmark and Norway
Frederick III of Denmark (1609–1670), King of Denmark and Norway
Frederick IV of Denmark (1671–1730), King of Denmark and Norway
Frederick V of Denmark (1723–1766), King of Denmark and Norway
Frederick VI of Denmark (1768–1839), King of Denmark and Norway
Frederick VII of Denmark (1808–1863), King of Denmark
Frederick VIII of Denmark (1843–1912), King of Denmark
Frederick IX of Denmark (1899–1972), King of Denmark
Frederik, Crown Prince of Denmark (born 1968), Crown Prince of Denmark

Frederick Banting (1891–1941), Canadian doctor who co-discovered insulin
Fred Dibnah (1938–2004), English steeplejack and television personality
Frederick Douglass (1818–1891), American abolitionist, editor, orator, author, statesman and reformer
Frederick Augustus Forbes (1818–1878), Australian politician
Frederick Forsyth (born 1938), British novelist
Freddy Stephen Fuller, Canadian ex-amateur boxer 666
Fred Hollows (1929–1993), Australian ophthalmologist and philanthropist
Frederick Pei Li (born 1940), American physician and co-discoverer of Li-Fraumeni syndrome
Frederik Magle (born 1977), Danish composer
Fred Meyer (politician) (1927–2012), American politician
Frederick Norris (1921–2006), British marathon runner
Frederick de la Roche (died 1173), the sixth Latin archbishop of Tyre
Frederick Segura (born 1979), Venezuelan track and road cyclist
Frederick Skiff (1867–1947), American author, collector and bibliophile
Fred "Sonic" Smith (1949–1994), guitarist of American rock band MC5
Frederick Varley (1881–1969), painter
Frederik (singer), (1945), stage name of Finnish singer Ilkka Juhani Sysimetsä, also known as Reetu
Sabrina Frederick-Traub (born 1996), Australian rules footballer

Frederick (Animal Farm), the owner of Pinchfield Farm in the novel by George Orwell
Frederick Gaylord Crane, fictional child of Lilith and Frasier Crane on the American TV shows "Cheers" and "Frasier"

Places

Frederic (band), a Japanese rock band from Kobe
Frederick (fictional character), the mouse protagonist of the eponymous 1968 children's book by Leo Lionni
Frederick (ship), several ships
"Frederick" (song) by Patti Smith