John William Duarte (2 October 1919 – 23 December 2004) was a British composer, guitarist and writer.

Duarte was born in Sheffield, England, but lived in Manchester from the age of 6. Although his surname, Duarte, is of Portuguese origin, he considered himself 100% British — his father was Scottish and his mother was English — a fact that echoed throughout his music. Duarte's English Suite, op. 31, a three-movement work for the guitar, reflects the Renaissance style of court lutenists such as John Dowland and John Johnson.