Nuno Duarte Gil Mendes Bettencourt (born September 20, 1966) is a Portuguese-American guitarist, singer-songwriter, and record producer. He became known as the lead guitarist of the Boston rock band Extreme. He has also recorded a solo album as well as having founded bands including Mourning Widows, Population 1, DramaGods, and The Satellite Party. In 2007, he also reunited with Extreme to record new music and tour.