Koombiyo (English: Ants, සිංහල: 'කූඹියෝ') is a 2017 Sri Lankan crime political thriller series created by Lakmal Darmarathna and Damitha Chandrasiri.

The show premiered on ITN on 26 August 2017 with 30 minutes episodes airing on Saturday and Sunday at 08:00 pm weekly.

Koombiyo tells the story of Jehan Fernando, who has neither a family nor home and lives alone in an abandoned building complex in Colombo.

A local gangster named Austin and his right-hand henchman Tiran come to meet Jehan to offer him a job to steal an expensive motor car from a wealthy businessman.

It is revealed that Jehan is not an average scammer but a well respected criminal mastermind who has a reputation for planning and executing heists.

After successfully stealing the car as planned, another client approaches Jehan through the recommendation of Austin to stop a journalist from exposing a popular politician's dirty past.

Meanwhile, a CID officer named Cyril Abeysekara came to meet Jeahan to question him about a bank robbery happened 6 years ago.

Jehan managed to dodge the questions cleverly with Cyril unable to find any clear evidence to link him to the robbery.

Upon realization of their involvement in the death, Jehan leaves to a remote village school seemingly to escape from his criminal ways.

[3] By October, 2017 Koombiyo became the highest rated crime television drama on IMDb database receiving a score of 9.9/10 in which resulted by majority voting 10/10.