Irvin Mayfield, Jr. (born December 23, 1977) is an American jazz trumpeter and bandleader. He has been serving as Cultural Ambassador of the City of New Orleans and State of Louisiana since 2003. He co-founded and has co-led the Afro-Cuban jazz group Los Hombres Calientes since 1998. Their debut album won Billboard's 2000 Contemporary Latin Jazz Album of the Year. Mayfield has released ten albums since 1998, and has played at prominent Jazz Festivals during his career.
In 2002 he founded and became Artistic Director of The New Orleans Jazz Orchestra (NOJO). The orchestra made its debut in September 2003 and he performed at the Higher Ground Hurricane Relief Benefit Concert . In July 2008 Mayfield was appointed Artistic Director of Jazz at Orchestra Hall, the jazz series of the Minnesota Orchestra.