This, according to the Economist Intelligence Unit’s latest Worldwide Cost of Living Report.
French capital Paris and Swiss city Zurich were tied in 2nd place.
The EIU survey compares more than 400 individual prices across over 150 products and services.
However, the report noted that Singapore remains significantly cheaper than its peers in terms of household goods and hiring domestic help.
The last city to be ranked costliest in the world was Tokyo back in 2013.