Kostadin

Kostadin is a variant of Konstantin (Constantine). It may refer to:


 * Kostadin Adzhov (born 1991), Bulgarian footballer
 * Kostadin Alakushev, Bulgarian revolutionary in the Internal Macedonian-Adrianople Revolutionary Organization (IMARO)
 * Kostadin Angelov (born 1973), Bulgarian coach
 * Kostadin Bashov (born 1982), Bulgarian footballer
 * Kostadin Dyakov (born 1985), Bulgarian footballer
 * Kostadin Dzhambazov (born 1980), former Bulgarian footballer
 * Kostadin Gadzhalov (born 1989), Bulgarian footballer
 * Kostadin Georgiev (born 1986), Bulgarian footballer
 * Kostadin Hazurov (born 1985), Bulgarian footballer
 * Kostadin Katsimerski (born 1987), Bulgarian footballer
 * Kostadin Kostadinov (born 1959), retired Bulgarian football player
 * Kostadin Kostadinov (professor) (born 1955), Bulgarian scientist
 * Kostadin Markov (born 1979), Bulgarian footballer
 * Kostadin Stoyanov (born 1986), Bulgarian footballer
 * Kostadin Varimezov (1918–2002), famous Bulgarian bagpiper (gaidar)
 * Kostadin Velkov (born 1989), Bulgarian footballer
 * Kostadin Vidolov (born 1970), Bulgarian former footballer
 * Kostadin Yanchev (born 1963), Bulgarian former footballer
 * Kostadin Zelenkov (born 1977), Bulgarian football player