Gillian Akiko Thomson (born October 8, 1974) is a Filipina television host, journalist and retired swimmer. She is the most accomplished Filipina swimmer in the Southeast Asian Games having won eight gold medals in the biennial multi-sport meet between 1987 and 1993. She is the youngest of three children born to a Japanese mother from Hiroshima, Hiroko Nakamura and American father, James Marsh Thomson. Her older siblings are Julia and Joshua. When she was young, she and her family moved to Manila where her father, who had previous experience with the United States Office of Naval Intelligence, became the Executive Director of the American Chamber of Commerce of the Philippines in the latter years of the Marcos dictatorship.