• HMS Princess Maria was a 38-gun ship captured in 1652 and wrecked in 1658.
• HMS Princess Mary was a yacht
  Yacht
  A yacht is a recreational boat or ship. The term originated from the Dutch Jacht meaning "hunt". It was originally defined as a light fast sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into the shallow waters of the Low Countries...
  
   built in 1688. She was sold at some point, becoming a merchant ship. She remained in service until 1827 under the name Betty Cairns.
• HMS Princess Mary
  HMS Mary (1704)
  HMS Mary was a 60-gun fourth rate ship of the line of the Royal Navy, built at Chatham Dockyard and launched on 12 May 1704.Orders were issued on 15 December 1736 for Mary to be taken to pieces and rebuilt according to the 1733 proposals of the 1719 Establishment at Portsmouth, from where she was...
  
   was a 60-gun fourth rate launched in 1704 as HMS Mary
  HMS Mary (1704)
  HMS Mary was a 60-gun fourth rate ship of the line of the Royal Navy, built at Chatham Dockyard and launched on 12 May 1704.Orders were issued on 15 December 1736 for Mary to be taken to pieces and rebuilt according to the 1733 proposals of the 1719 Establishment at Portsmouth, from where she was...
  
  . She was relaunched in 1742 as HMS Princess Mary, and was sold in 1766.

See also

• HMS Princess
  HMS Princess
  Seven ships of the Royal Navy have been named HMS Princess, HMS Princesse or HMS Princessa:* HMS Princesse was a 54-gun fourth rate launched in 1660 and broken up in 1680....
  
  
• HMS Mary
  HMS Mary
  Fifteen ships of the Royal Navy have borne the name HMS Mary: was a Cinque Ports ship in service in 1350. was a ship in service from 1400 and given away in 1423. was a ship in service from 1413 and lost in 1426. was a Royalist ketch in 1648. She was captured by the Parliamentarians in 1649 and not...