‘Impact of Indian culture on Sri Lanka’ – Siddhartha Law College, Bombay 1976.
‘Sculpture of Sri Lanka’. Royal Asiatic Society, Bombay. 1976.
‘Some archaeological monuments of Sri Lanka’. University of Calcutta. 1976.
‘The Sri Lankan Buddha image’: At the Ananda Coomaraswamy Centenary Seminar,.Department of Culture and Lalit Kala Academy, New Delhi 1977.
‘Buddhist archaeological monuments of Sri Lanka‘. Netherlands Universities Foundation for International Co-operation, Den Haag. 1978.
‘Current archaeological research in Sri Lankan art and archaeology’. Seminar fur Orientalische Kunstgeschichte, University of Bonn. 1978.
‘Current archaeological research in Sri Lanka – problems and prospects’. Seminar for Ethnologie Sudasein Institut, University of Heidelburg, 1978.
‘Secular and sacred traditions in Sri Lankan wall painting’. Seminar for Ethnologie Sudasein Institut, University of Heidelburg. 1978.
‘The monuments of the Cultural Triangle’. Festival of Sri Lanka Seminar, Commonwealth Institute, London. 1981.
‘Recent archaeological excavations at Polonnaruva’. University of Puget Sound, Tacoma, Washington. 1984.
‘Recent Archaeology of Sri Lanka’. American Institute of Archaeology, Spokane, Washington. 1984.
‘The archaeology of Sri Lanka and the Cultural Triangle’. University of Washington, Seattle. 1984.
‘The Buddha image of Sri Lanka’. Light of Asia exhibition. Los Angeles County Museum. 1984.
‘Recent archaeological excavations in Sri Lanka’. University of Berkley, San Francisco. 1984.
‘Royal cities of Polonnaruva and Kandy’. Guest lecture. Asia Society, Washington DC. 1984.
‘The architecture of the Polonnaruva period’. Guest lecture. University of Maryland 1984.
‘The archaeological excavations of the Cultural Triangle at Polonnaruva’. Guest Lecture. Institute of Archaeology, London. 1984.
‘Art and archaeology of ancient Lanka’ – lecture arranged by Prof. Allchin, London, 1984.
‘The icon of the Buddha’. British Museum, London. 1984.
‘Manjusri – a silpa text on Buddhist architecture’. Institute of South-Asian Archaeology, University of Amsterdam. 1986.
‘Manjusri-bhasita vastu vidya sastra’. Waseda University, Tokyo. 1985.
‘The archaeology of monastic hospitals in Sri Lanka’. First SAARC Congress, New Delhi 1986.
‘A Buddhist monastic complex of the medieval period in Sri Lanka’. World Archaeological Congress, University of Southampton. September 1986. Page 12.
‘Ancient monastic hospital system in Sri Lanka’. UNESCO Conference on Integral Study of the Silk Roads: Roads of Dialogue, January 1991, Bangkok, Thailand.
‘Mahayana Buddhism in Sri Lanka – the archaeological evidence’. Indian Arts Circle, Department of Art and Archaeology, School of Oriental and African Studies, University of London, 1991. (published).
(with Arjuna Aluvihare) ‘Ancient hospital systems of Sri Lanka; The archaeological evidence’. The British Academy, London and the Leiden University Netherlands 1992 (published).
‘The future of the Sri Lanka / Dutch relations: studying and conserving the ancient monuments’. Introductory lecture at Workshop, National Museum of Ethnology, Leiden, Netherlands, 1993
‘Heritage transportation canal corridors of Sri Lanka’. Meeting of Heritage Transportation Canals in Ottawa, Department of Canadian Heritage, Parks, Canada, September 1994.
Sri Lanka
‘The archaeology of the later ages with particular emphasis on monuments and conservation of monuments, descriptive and typological studies including the history of art, architecture, sculpture and painting’. Second International Conference – Seminar on Asian Archaeology, Colombo, August 1969
‘ආනන්ද කුමාරස්වාමි මහතාගෙන් කලාවට සිදුවූ සේවය‘. Ananda Coomaraswamy day at Peradeniya Campus University of Ceylon Peradeniya, 9th September 1975
‘Hospitals and other archaeological monuments in Ceylon’. The Kandy Society of Medicine, Scientific Sessions, Peradeniya Campus, March 1975
‘Manjusri-bhasita vastu vidya sastra – a manuscript on Buddhist silpa sastra’. Archaeological Society of Sri Lanka, Colombo, June 1976
Conference on Loss of Sri Lankan Antiquities (ශ්රී ලංකාවේ පුරාවස්තු පිටරට ඇදී යාම පිළිබඳ සම්මන්ත්රණය), Ministry of Cultural Affairs, May 1976. 2 lectures:
“බුද්ධ ප්රතිමාවේ ප්රභවය පිළිබඳ ආනන්ද කුමාරස්වාමිගේ මතය”Ananda Coomaraswamy 100th Birth Anniversary Seminar, Sri Lanka Archaeological Society and Sri Lanka Cultural Board, 28th September 1977
‘The Archaeology of Buddhist monastic hospitals in Sri Lanka’. Presented at
National Archaeological Congress 1985
South Asian Archaeological Congress, 1986
‘Archaeology in Sri Lanka – the future’. Seminar on Archaeology, Natural Resources, Energy and Science Authority of Sri Lanka, April 1985
Papers presented at the National Archaeological Congress 1986
‘Museums and archaeology’
‘Monastic health services of ancient Lanka’
‘Nalanda gedige’
‘The iconographic significance of the Buddha image’. Colloquium at the Institute of Fundamental Studies, Kandy, 1986
‘The early Sri Lankan Buddha image: significance and problems of dating’. 2nd SAARC Archaeological Congress Sri Lanka, 1987
‘Ancient Hospitals of Sri Lanka: built environment and surgical systems’. (with Arjuna Aluvihare). Presented at
Inaugural Lecture of the Perspectives in Archaeology seminar series, Department of Archaeology University of Peradeniya, 1990
International Seminar: Towards the Second Century of Archaeology in Sri Lanka, Colombo, July 1990. Available at PGIAR library Colombo.
‘The historical and archaeological significance of the Natha Devale premises’. D.T. Devendra Memorial Lecture, 1996
Zimbabwe- Sri Lanka-Norway Cooperation Programme – National Museums and Monuments, Zimbabwe project management mission to Sri Lanka at Central Cultural Fund Colombo, 1996. Two lectures:
‘Archaeological excavation at the Alahana Parivena project Polonnaruva’
‘The archaeological excavation in Kandy under the Cultural Triangle project’
‘The monitoring of World Heritage Sites in Asia: Sri Lanka’. First workshop on ABIA (Index of South and Southeast Asian Art and Archaeology) Colombo, Sri Lanka, January 1997
World Cultural Day Seminar, Central Cultural Fund, 21st May 2001. Two lectures:
`Save our cultural heritage’
‘Excavation in Sri Lanka’
‘On the art and archaeology of Thailand and Sri Lanka’. Thailand-Sri Lanka Cultural Exchange Programme organized by the Thai Embassy in Sri Lanka, 2001
‘The contribution of archaeology to Buddhist studies in Sri Lanka’. Keynote address at the 3rd National Conference on Buddhist Studies, Pali and Buddhist University of Sri Lanka, 12th July 2007
The National Trust Sri Lanka public lecture series, No.34, October 2011.
The Institute for Construction Training and Development (ICTAD) Colombo, October 2011
‘The archaeology of Buddhist monastic hospitals in ancient Lanka’. SAARC International Conference on Archaeology of Buddhism, Colombo, Sri Lanka. August 2012
