Johor Baru (jōhôrˈ bärˈō, jə–) [key] or Johor Baharu jōhôrˈ bəhärˈō, jə–, city (1991 pop. 561,071), capital of Johor, Malaysia, S Malay Peninsula, opposite Singapore. The city is connected with Singapore by a stone causeway across the narrow Johore Strait. It is a trade center for rubber and tropical produce. The seat of the sultan of Johor is in Johor Baru; his residence, Bakit Serene, contains priceless art treasures. The population of the city is mainly Chinese.