The Sultan Abu Bakar Complex or Kompleks Sultan Abu Bakar (KSAB) (Jawi: كومڤليك س سلطان ابو بكر ) is the second customs, immigration and quarantine (CIQ) in Malaysia after Sultan Iskandar Building, Johor Bahru. Located at Kampung Ladang, Tanjung Kupang, Johor. This building is part of the Second Link Expressway and Malaysia-Singapore Second Link. It was named after Sultan Abu Bakar of Johor.