Thomas Beckington (also spelt Beckynton; c. 1390 – 14 January 1465) was the Bishop of Bath and Wells and King's Secretary in medieval England under Henry VI.

After that he devoted his time to secular affairs and was sent on an embassy to Calais in 1439 and to John IV, Count of Armagnac in 1442.

[2] At this time Beckington was acting as secretary to Henry VI, and soon after his return in 1443 he was appointed Lord Privy Seal, an office he held until 1444.

[4] The bishop erected many buildings in Wells and elsewhere, probably altering the rectory at Sutton Courtenay in Berkshire (now Oxfordshire), an early preferment.

Beckington played a leading role as architect of the legal aspects of Henry VI's foundation of Eton College in 1440; he is commemorated in the name of the school's central dining hall, 'Bekynton'.