P49 may refer to:
* , a submarine of the Royal Navy
* , a corvette of the Indian Navy
*
Lockheed XP-49
The Lockheed XP-49 (company Model 522) was an advancement on the P-38 Lightning for a fighter in response to U.S. Army Air Corps proposal 39-775. Intended to use the new 24-cylinder Pratt & Whitney X-1800 engine, this proposal, which was for an ...
, an American experimental fighter aircraft
*
Papyrus 49
Papyrus 49 (Gregory-Aland), designated by 𝔓49, is an early copy of the New Testament in Greek. It is a papyrus manuscript of the Epistle to the Ephesians, surviving in a fragmentary condition. The manuscript has been palaeographically assign ...
, a biblical manuscript
*
Percival P.49 Merganser II, a proposed British aircraft
* P49, a
Latvian state regional road
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