The capital of the Republic of Singapore is Singapore. Singapore City capital of the Republic of Singapore. A free port centred on the southern part of Singapore island, it so dominates the island that the republic is now commonly considered a city-state.
Singapore, officially the Republic of Singapore, is known as the Lion City (Singapura) and consists of the main island and about 64 smaller offshore islands, including Sentosa (the largest of the offshore islands), Pulau Ubin, St John’s Island and the Sisters’ Islands.