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 See also John Hay (disambiguation)