William Middleton (or William de Middleton; died 31 August or 1 September 1288) was a medieval Bishop of Norwich.
Middleton began his career as a clerk in the Jewish exchequer in 1265.
He was given custody of the rolls in 1276, and in 1277 was at the French royal court.
[3] He continued to work on royal administrative business after his election and consecration.
[1] In July 1287 Middleton was appointed to the offices of Seneschal of Gascony and Lieutenant of the Duchy of Aquitaine.