Mario Glory Rookantha Gunathilake (රූකාන්ත ගුණතිලක) (born 5 September 1959) is a Sri Lankan singer and songwriter.He started his career as a solo singer in late 1980s.He frequently duets with his wife Chandralekha Perera.His daughter Raini Charuka is also a singer and an actress. Rookantha is one of the most successful musicians in Sri Lankan disco industry.His albums have sold around 10,000 copies in Sri Lanka.He is known as the person who changed the Sri Lankan music industry in the 1980s with his songs.