William Gainsborough was a medieval Bishop of Worcester. He was nominated on 22 October 1302 and consecrated on 28 October 1302. He died on 17 September 1307.^[1]

He was a Franciscan and had been Minister Provincial (head of the order) in England from 1285-1292 ^[2]

• Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge: Cambridge University Press. ISBN 0-521-56350-X.