Harry Trelawny (disambiguation)

Harry Trelawny may refer to:
 * Sir Harry Trelawny, 5th Baronet (1687–1762), British officer
 * Harry Trelawny (1726–1800), British general and Coldstream Guards officer, nephew of the 5th Baronet
 * Sir Harry Trelawny, 7th Baronet (1756–1834), Protestant preacher and convert to Roman Catholicism, nephew of the general