Sir Gilbert of Preston (1209–1274) was a British justice. He was the son of Walter of Preston, who was High Sheriff of Northamptonshire between 1206 and 1208. Gilbert acted as a collector of aid in Northamptonshire between 1235 and 1236, and in 1240 was appointed as a royal justice, acting almost continuously until 1254 as a Puisne justice on the Eyre circuits of William de York, Roger of Thirkleby and Henry of Bath, and in the common bench at Westminster. He also received many miscellaneous judicial and administrative commissions, but was not given a regular salary (of £40) until 1253, despite having worked as a judge for 13 years.