John de Lancaster may refer to:
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John of Lancaster, 1st Duke of Bedford
John of Lancaster, Duke of Bedford KG (20 June 138914 September 1435) was a medieval English prince, general and statesman who commanded England's armies in France during a critical phase of the Hundred Years' War. Bedford was the third son of ...
, regent of France
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John de Lancastre, 1st Baron Lancastre, medieval parliamentary baron
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John de Lancaster (MP) for
Lancashire (UK Parliament constituency)
Lancashire was a county constituency of the House of Commons of the Parliament of England from 1290, then of the Parliament of Great Britain from 1707 to 1800, and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by ...
{{hndis, Lancaster, John de