William de Ufford, 2nd Earl of Suffolk (b. c. 1339)
William Ufford, 2nd Earl of Suffolk (30 May 1338 – 15 February 1382) was an English nobleman in the reigns of Edward III and Richard II. He was the son of Robert Ufford, who was created Earl of Suffolk by Edward III in 1337. William had three older brothers who all predeceased him, and in 1369 he succeeded his father.

In the 1370s, he participated in several campaigns of the Hundred Years' War, but this period was not a successful one for England. Suffolk was closely connected to Thomas Beauchamp, Earl of Warwick and John of Gaunt, Duke of Lancaster, and his conciliatory skills were highly valued in national politics. He helped arbitrate in the conflict between Gaunt and the parliamentary Commons during the Good Parliament.

In 1381, Suffolk took part in suppressing the Peasants' Revolt in East Anglia, after narrowly escaping the rebels himself. He died suddenly in 1382 while attending parliament, and since he had no surviving children, his title became extinct and his property was dispersed.