Srilanka-Places.com has listed approx 21 Association or organizations in Colombo. Some of the Top rated Association or organizations in Colombo are- Lanka Readymix Concrete Association, Sri Lanka Book Publishers' Association, Computer Science Society of University of Colombo, Sri Lanka Saukyadana Movement, Sri Lanka Federation of the Visually Handicapped, Chef's Guild Of Lanka, Chef's Guild Of Lanka, Lions Club Of Kolonnawa, Association of Container Transporters & National Mine Action Center.