Simpang Renggam is a town in Kluang district of Johor, Malaysia. It lies on the old main trunk road that used to take the majority of the North-South traffic going through Johor before the opening of the North-South Expressway.Besides Simpang Renggam housing the 5th Battalion Royal Malaysian Police General Operation Force (Malay: Pasukan Gerakan AM PGA Batalion 5).The Simpang Renggam Behavioural Rehabilitation Centre is also located in this town.