Sir John Tyrrell (c. 1382 – 2 April 1437)lord of the manor of Heron in the parish of East Horndon, Essex, was Knight of the Shire for Essex, Speaker of the House of Commons, and Treasurer of the Royal Household.
John Tyrrell was the eldest son of Walter Tyrrell of Avon Tyrrell, Hampshire, by his wife Eleanor Flambard (d. 29 March 1422), daughter and heiress of Edmund Flambard of Shepreth, Cambridgeshire, by his wife Elizabeth FitzRalph, daughter of Richard FitzRalph. After the death of Walter Tyrrell, Eleanor remarried to Sir Nicholas Haute (1357–c. 1415), MP, of Wadden Hall in Waltham, Kent.
John was the grandson and heir of Sir Thomas Tyrrell (d.1382) who was buried at Downham, Essex, in 1382, and was survived by his wife, Alice.
John Tyrrell had the following four brothers:
He probably also had a sister:
John Tyrrell was appointed High Sheriff of Essex and Hertfordshire in 1413 and again in 1423. He was elected knight of the shire for Essex 12 times between 1411 and 1437 and once for Hertfordshire in 1427. He was elected Speaker of the House of Commons three times, in 1421, 1429 and 1437.