| Thomas of Melsonby | |
| Religion: | Catholic |
| Bishop of Durham | |
| Elected: | 1 June 1237 |
| Ended: | resigned after 1237 |
| Predecessor: | Richard le Poor |
| Successor: | Nicholas Farnham |
| Other Post: | Prior of Durham |
| Death Date: | after 1244 |
Thomas de Melsonby (died after 1244) was a medieval Bishop of Durham-elect and Prior of Durham.
Melsonby was the son of the rector of Melsonby.[1] He was prior of a cell at Coldingham before being elected prior of Durham Cathedral in about 1233.[2] He was elected to the see of Durham on 1 June 1237 but King Henry III of England objected. After lawsuits, Melsonby resigned the bishopric.[1] He remained prior until 1244 when he resigned that office. He died sometime after 1244.[2]