William Ufford, 2nd Earl of Suffolk KG (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 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.