Yan Pascal Tortelier (born 19 April 1947) is a French conductor and violinist. Born in Paris, he is the son of the cellist Paul Tortelier, and the brother of Maria de la Pau. Tortelier began piano and violin studies at age 4. At age 14, he was a first-prize winner for violin at the Paris Conservatoire. 　　Tortelier has worked and recorded extensively in the United Kingdom. He was principal conductor of the Ulster Orchestra from 1989 to 1992. He served as Principal Conductor of the BBC Philharmonic Orchestra in Manchester from 1992 to 2003, and now has the title of conductor emeritus with the orchestra. He has also been a Principal Guest Conductor of the National Youth Orchestra of Great Britain (NYOGB).