Dejan (Cyrillic: Дејан) is a South Slavic masculine given name, derived from the Slavic verb dejati, meaning "to act, to do". The name and the derived surname Dejanović are common among South Slavs.
The name is first recorded in 1325 (1333) for a voevod of king Stefan Uroš.
Notable people
Dejan (fl. 1346-66), Serbian magnate
Dejan Bodiroga (born 1973), Serbian basketball player
Dejan Dabović (1944–2020), Yugoslav water polo player
Dejan Damjanović (born 1981), Montenegrin footballer
Dejan Dimitrovski (born 1979), Macedonian footballer
Dejan Gluščević (born 1967), Serbian footballer and manager
Dejan Iliev (born 1995), Macedonian footballer
Dejan Janković (born 1986), Serbian footballer
Dejan Judež (born 1990), Slovenian ski jumper
Dejan Kelhar (born 1984), Slovenian footballer
Dejan Kulusevski (born 2000), Swedish footballer of Macedonian descent
Dejan Lovren (born 1989), Croatian footballer
Dejan Medaković (1922–2008), Serbian art historian, writer and academician
Dejan Meleg (born 1994), Serbian footballer
Dejan Milojević (1977–2024), Serbian basketball player and coach
Dejan Milovanović (1984–2025), Serbian footballer
Dejan Petković (born 1972), Serbian footballer
Dejan Petković (born 1958), Serbian singer
Dejan Ristanović (1963–2025), Serbian writer and computer publicist
Dejan Savić (born 1975), Serbian water polo player and coach
Dejan Savićević (born 1966), Montenegrin footballer
Dejan Stanković (born 1978), Serbian footballer and manager
Dejan Stefanović (born 1974), Serbian footballer
Dejan Stojanović (born 1959), Serbian poet, writer, essayist, philosopher, businessman and journalist
Dejan Tomašević (born 1973), Serbian basketball player
Dejan Udovičić (born 1970), Serbian water polo coach
Dejan Đedović (born 1973), Serbian futsal coach