Dušan "Koja" Kojić (Serbian Cyrillic: Душан Којић Која; born 14 June 1961) is a Serbian rock bassist, singer, and songwriter. He is the frontman of the Serbian Alternative rock band Disciplin A Kitschme (formerly known as Disciplina Kičme).

• "Mali čovek" / "Ona se budi" (1981)

• Bistriji ili tuplji čovek biva kad... (1981)

• Paket aranžman (1980) - with Električni orgazam and Idoli

• Svi marš na ples! (1981)

• Prijateljstvo zanat najstariji (1991) - EP
• Kako je propao rokenrol (1989) - with Vlada Divljan and Srđan Gojković
• Beogradska prevara! (2001)
• Kao da je bilo nekad...(posvećeno Milanu Mladenoviću) (2002) - with the band Nova Moćna Organizacija

• EX YU ROCK enciklopedija 1960-2006, Janjatović Petar; ISBN 978-86-905317-1-4