Fitz is a male given name and nickname which may refer to:

Given name

Fitz, American radio personality and host of Bob Kingsley's Country Top 40
Fitz Babbitt (1790–1815), United States Navy lieutenant in the War of 1812
Fitz Boothby (1861–1889), Scottish golfer
Fitz Eugene Dixon Jr. (1923–2006), American educator, sportsman and philanthropist
Fitz W. Guerin (1846-1903), American photographer and Civil War Medal of Honor recipient
Fitz Hall (born 1980), English soccer player
Fitz Jackson, Jamaican politician
Fitz Henry Lane (1804-1865), American painter and printmaker born Nathaniel Rogers Lane
Fitz Lee (Medal of Honor) (1866-1899), African-American United States Army soldier and Medal of Honor recipient
Fitz Hugh Ludlow (1836-1870), American author, journalist, and explorer, best known for his autobiographical book The Hasheesh Eater
Fitz James O'Brien (1828-1862), Irish-born American writer
Fitz John Porter (1822-1901), Union Army general in the American Civil War
Fitz Remedios Santana de Souza (1929–2020), Kenyan lawyer and politician
Fitz Steele (born 1965), American politician
Fitz Henry Warren (1816-1878), American politician and Union Army general

Nickname

Fitzhugh L. Fulton (1925–2015), US Air Force retired lieutenant colonel and civilian research pilot
Michael "Fitz" Fitzpatrick (born 1970), American singer-songwriter and frontman of Fitz and the Tantrums
Delmont "Fitz" Hinds (1880–?), West Indian cricketer
Fitzhugh Lee (1835–1905), Confederate Civil War general and Governor of Virginia, called Fitz by contemporaries
Fitzroy "Fitz" Vanderpool (born 1967), Canadian professional boxer