Ko Mark No Mark (Sinhala: කෝ මාක් නෝ මාක්) is a 2014 Sri Lankan Sinhala comedy film directed by Jayaprakash Siwgurunadan and produced by Soma Edirisinghe for EAP Films.

Mark has a tough time at home with his wife as he has not been paid his salary for several months.

One day when Prof. Amaraweera refuse to pay his salary, Mark decides to commit suicide and swallows a solution in the lab prepared by the professor.

Instead of death it makes him disappear physically and quite surprisingly he gets in touch with a dead revolutionary Vimukthi.

The revolutionary uses Mark to achieve his mission to make a better and equal society.