Port Moresby (môrzˈbē) [key], town (1990 pop. 193,242), capital of Papua New Guinea, on New Guinea island and on the Gulf of Papua. Rubber, gold, and copra are exported. Port Moresby was founded by Capt. John Moresby, who landed there in 1873. The British occupied it in 1883. During World War II the chief Allied base on New Guinea was there. A new capital is being built in suburban Waigani.