The Sultan Abu Bakar Complex (KSAB; Malay: Kompleks Sultan Abu Bakar; Jawi: کومڤليکس سلطان ابو بکر ) is a customs, immigration and quarantine (CIQ) complex in Tanjung Kupang, Iskandar Puteri, Johor, Malaysia.

Located at the northern end of the Malaysia–Singapore Second Link, it is one of the two land ports of entry to Malaysia on the Malaysia–Singapore border.

The CIQ complex is named after Sultan Abu Bakar of Johor.

Buses and coaches drop passengers outside separate buildings on both sides of the immigration checkpoint; after clearing entry or exit immigration checks depending on the direction of travel, passengers board the same vehicle that dropped them off.

Near the complex is the KSAB quarters housing for Malaysian immigration and customs staff and have two schools Sekolah Kebangsaan Kompleks Sultan Abu Bakar (SKKSAB) primary schools and Sekolah Menengah Kebangsaan Kompleks Sultan Abu Bakar (SMKKSAB) secondary schools.