Y.A.M. Tunku Naquiyuddin is a keen environmentalist and was a Committee Member of the World Wide Fund for Nature (Malaysia) and a Council Member of the Business Council for Sustainable Development, a Geneva-based organisation. An active businessman, Y.A.M. Tunku Naquiyuddin’s interest spanned a broad spectrum uniting the Malaysian public companies through the Federation of Public Listed Companies Bhd which he founded; bridging bilateral boundaries through the Malaysia-France Economic and Trade Association which he headed for eight (8) years; and even striving for Asia-Pacific cooperation through the Canada-ASEAN Centre of which he was a Council Member. He was nominated by the Minister of Finance to sit on the Committee of Kuala Lumpur Stock Exchange in 1989 for five (5) years. He was a former diplomat. He was also Regent of the State of Negeri Sembilan from 1994 until April 1999.