Marina Mahathir started her career in 1980 as a feature writer with Her World Magazine. Subsequently, she rose to Acting Editor and then Promotions Manager with Berita Publishing. Since then, she has written for The Star and Mingguan Malaysia.
Her journalistic career includes being named as the international correspondent for Vogue Paris (1989) in which she also coordinated a 16-page supplement on Malaysia. She was the Editorial Consultant to Newsweek International's 40-page supplement on Malaysia (January, 1993), and Editor-in-Chief of Sojourn magazine (March, 1993). Her other areas of work includes having worked on a worldwide public relations program for Tourism Malaysia; handled promotional, press and public relations for PATA '86 Conference; Project Consultant to International Herald Tribune's 'Malaysia: Powerhouse of the 90s Conference' (November, 1993) and the 'Malaysia Summit Conference' (November, 1994). She has also done a variety of important books and photography exhibitions which includes: 'Malaysia: Heart of Southeast Asia', 'EYES on ASEAN: A Photographic Journey through the Association of Southeast Asian Nations', 'Crafts of Malaysia', 'A Passage to Vietnam', 'The Encyclopedia of Malaysia', 'The Philippines: A Voyage through the Archipelago', 'Visions: a Multicultural Exploration of Malaysia and Australia' photography exhibition, and the book, 'Visions'. Her book, 'In Liberal Doses', a collection of her columns in The Star, was published in 1997.
She has also been actively involved in the field of HIV/AIDS. She is the Chair on the Board of Trustees for the Malaysian AIDS Foundation, and is the President of the Malaysian AIDS Council, and until December 1999, was the Asia-Pacific NGO representative to the Joint UN Programme on HIV/AIDS (UNAIDS). She is also Vice-President of the AIDS Society of Asia and the Pacific (ASAP) and in 1999, she chaired the 5th International Congress on AIDS in Asia and the Pacific (ICAAP) in Kuala Lumpur.
Datin Paduka Marina has been awarded the Avon-Tan Sri Fatimah Women of Distinction Award for Social Work, Rotary International's highest award for community service, the Dato Paduka Mahkota Selangor Award by HRH The Sultan of Selangor, Honorary Masters of Arts by Universiti Sains Malaysia, Penang, Fifth ASEAN Achievement Award for Community Service by the ASEAN Business Forum, and the Tokoh Mas Award by the Tunku Kurshiah College Old Girls' Association. She is married to Tara Sosrowardoyo and is the mother of two girls. She was schooled in Malaysia and England, graduating with BA (Hons) in International Relations from the University of Sussex, Brighton.