Celil Oker (1952 – 5 May 2019) was a Turkish novelist. He is best known for writing crime fiction. His books include "Çıplak Ceset" (1999), "Kramponlu Ceset" (1999), "Bin Lotluk Ceset" (2000), "Rol Çalan Ceset" (2001), "Bir Şapka Bir Tabanca" (2005), "Beyaz Eldiven Sarı Zarf" (2011) and "Sen Ölürsün Ben Yaşarım" (2015). Outside of Turkey, his books were published in Europe. He also a member of staff at Istanbul Bilgi University. He was born in Kayseri.