Lord John Hay may refer to:

• John Hay, 1st Lord Hay of Yester (1450–1508), Scottish nobleman
• Lord John Hay (Scottish Army officer) (c. 1668–1706), Scottish general
• Lord John Hay (politician) (1788–1851), British Royal Navy officer and Whig politician
• Lord John Hay (Royal Navy officer, born 1827) (1827–1916), British Royal Navy officer and Liberal politician, nephew of the above

• John Hay (disambiguation)

This disambiguation page lists articles about people with the same name.
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