Freydun (Persian: فریدون - Freydun; from the Avestan Θraētaona), is an Iranian masculine given name.
Freydun, Feridun, Faridun, or Afridun may refer to:
Freydun, an Iranian mythical king and hero
Fereydun Khan Cherkes (died 1620/21), Safavid official and military commander
Fereydoon Mirza (1810–1855), the 5th son of Abbas Mirza, then crown prince of Persia
Freidun Aghalyan (1876-1994), Armenian architect
Fereydun Robert "Fred" Armisen, (born 1966), American comedian and actor
Freydun Atturaya (1891–1926), Assyrian physician
Fereydoon Batmanghelidj (1931–2004), Iranian medical doctor; best known for his book, Your Body's Many Cries for Water
Fereydoon Motamed (1917–1993), internationally known professor and linguist
Fereydun Adamiyat (1920–2008), Iranian historian
Feridun Karakaya (1922-2004), Turkish comedy actor
Fereydoon Hoveyda (1924–2006), influential Iranian diplomat, writer and thinker
Fereydoon Moshiri (1926–2000), contemporary Persian poet
Feridun Buğeker (1933-2014), Turkish football player
Fereydoon Farrokhzad (1936–1992), Persian singer, actor, poet, TV and Radio host, writer, and political opposition figure
Fereydun Gole (1942–2005), Iranian screenwriter
Fereydoon Family (born 1945), leading Persian physicist in the field of nanotechnology and solid-state physics
Hassan Fereydun (born 1948), birth name of Hassan Rouhani, the 7th President of Iran
Feridun Aybars (born 1952), Turkish former swimmer
Feridun Sinirlioğlu (born 1956), Turkish diplomat and civil servant
Fereydoon Davatchi, director of the Rheumatology Research Center (RRC) in the Tehran University of Medical sciences
Feridun Hamdullahpur, Turkish-Canadian academic
Faridun Muhiddinov, Tajikistani engineer and politician
Feridun Bilgin (born 1964), Turkish civil servant and politician, former Minister of Transport, Maritime and Communication
Feridun Zaimoğlu (born 1964), German author and visual artist of Turkish origin
Feridun Düzağaç (born 1968), Turkish singer
Fereydoon Fazli (born 1971), Iranian football player
Ferydoon Zandi (born 1979), Iranian football midfielder
Feridun Sungur (born 1984), Turkish football player
All of the forms of the name shown above derive, by regular sound laws, from Proto-Iranian Thraetaona (Θraētaona) and Proto-Indo-Iranian Traitaunas.
Traitaunas is a derivative (with augmentative suffix -una/-auna) of Tritas, the name of a deity or hero reflected in the Vedic Trita and the Avestan Thrita (Θrita). Both names are identical to the adjective meaning "the third", a term used of a minor deity associated with two other deities to form a triad. In the Indian Vedas, Trita is associated with gods of thunder and wind.
Trita is also called Aptya (Āptya), a name that is probably cognate with Athwiya (Āθβiya), the name of father of Thraetaona in the Avestā. Traitaunas may therefore be interpreted as "the great son of the deity Tritas". The name was borrowed from Parthian into Armenian as Hrudēn.
