The Open University of Sri Lanka (OUSL) is the premier Open and Distance learning institution in Sri Lanka where students can pursue their studies through Open and Distance Learning (ODL) methodologies.

Established in 1980, under the Universities Act No. 16 of 1978 and OUSL Ordinance No. 1 of 1990, as amended, the OUSL has the same legal and academic status as any other national University in Sri Lanka. According to the Public Administration Circular No. 16/92, dated 13.03.92, issued by the Ministry of Public Administration, Provincial Councils & Home Affairs, the degrees awarded by The Open University of Sri Lanka are treated as equivalent to degrees awarded by any other University under the purview of the University Grants Commission.