HMS Tyger (1647)
 HMS Tyger often spelled Tiger was a 38-gun fourth rate frigate of the Royal Navy built by Peter Pett II at Woolwich and launched in 1647. The term 'frigate' during the period of this ship referred to a method of construction rather than a role which did not develop until the following century. She was the third ship of the Royal Navy to bear the name and by undergoing successive rebuildings she served for almost a century until she was wrecked in the Dry Tortugas in 1742.