Opposition [1] Kolonnawa Urban Council (Sinhala: කොලොන්නාව නගර සභාව, Tamil: கொலோனாவா நகர சபை) is the local authority for Kolonnawa and surrounding suburbs in Sri Lanka.

[2][3] Originally created in 1930, the Kolonnawa Urban Council came into being as a hub for warehousing and service sector for the nearby Port of Colombo.

Traders and retailers working in the various city markets, as well as low-income workers engaged in shipping-related activities were the mainstay of the Kolonnawa populace.

In addition to residential areas, a large volume of industrial and commercial buildings such as stores, warehouses, container yards, electricity distribution infrastructure (including the Kelanitissa Power Station) and the Ceylon Petroleum Storage Terminal (Kolonnawa Refinery) are located in the Kolonnawa area.

[4] The Kolonnawa Urban Council lies on the Southern bank of the Kelani River and covers an area of about 10.06 km2 (3.88 sq mi) in extent.