Aldin Čajić (Bosnian pronunciation: [âldiːn tʃâːjitɕ]; born 11 September 1992) is a Bosnian professional footballer who plays as a midfielder for Süper Lig club İstanbulspor. Čajić started his professional career at Teplice, before joining Dukla Prague in 2014. Three years later, he moved to Elazığspor. Later that year, he signed with İstanbulspor.