Southern Integrated Gateway, Border crossing building in Johor Bahru, Malaysia

The Southern Integrated Gateway is a large border facility in Johor Bahru that combines customs, immigration, and quarantine operations with a railway station and bus terminal. All these services sit together under one structure to move travelers efficiently between Malaysia and Singapore.

The complex was built as a Malaysian national project worth RM2.5 billion, designed by the Public Works Department with Gerbang Perdana Sdn Bhd as main contractor. The CIQ complex opened to vehicular traffic on 16 December 2008, and the JB Sentral railway station entered service on 21 October 2010, replacing the old Johor Bahru station. The planned Tanjung Puteri bridge to replace the Johor–Singapore Causeway was cancelled on 12 April 2006 by then Prime Minister Abdullah Ahmad Badawi.

The complex's Malay name, Gerbang Selatan Bersepadu, appears in Jawi (ݢربڠ سلاتن برسڤادو) and Tamil (தெற்கு ஒருங்கிணைந்த நுழைவாயில்). The CIQ building is named after Almarhum Sultan Iskandar ibni Almarhum Sultan Ismail of Johor. Its occupants include the Immigration Department, Royal Malaysian Customs, the Road Transport Department, PLUS Expressway Berhad, the Royal Malaysia Police, Keretapi Tanah Melayu, PERHILITAN and the Veterinary Services Department.

The building is designed to handle large volumes of passengers and offers plenty of parking for travelers crossing the border. Expect queues during peak times and allow time for immigration and customs procedures.

The facility works as a central hub where visitors can use train, bus, car, or taxi to cross the border. This variety of transportation options under one roof is unusual for a border facility and practical for different types of travelers.