P1

P1, P01, P-1 or P.1 may refer to:

Computing, robotics, and, telecommunications

 * DSC-P1, a 2000 Sony Cyber-shot P series camera model
 * Sony Ericsson P1, a UIQ 3 smartphone
 * Packet One, the first company to launch WiMAX service in Southeast Asia
 * Peer 1, an Internet hosting provider
 * Honda P1, a 1993 Honda P series of robots, an ASIMO predecessor

Media

 * DR P1, a Danish radio network operated by Danmarks Radio
 * NRK P1, a Norwegian radio network operated by the Norwegian Broadcasting Corporation
 * SR P1, a Swedish radio network operated by Sveriges Radio
 * Polonia 1, a Polish TV channel of the Polcast Television

Military

 * P-1 Hawk, a 1923 biplane fighter of the U.S. Army Air Corps
 * Kawasaki P-1, a Japanese maritime patrol aircraft (previously P-X)
 * P-1 (missile), a Soviet anti-ship cruise missile

Biology

 * P1 antigen, identifies P antigen system
 * P1 laboratory, biosafety -level-1 laboratory
 * P1 phage, a bacterial virus
 * SARS-CoV-2 Gamma variant, a strain of COVID-19 virus SARS-CoV-2 first detected in Manaus, Brazil in 2020
 * ATC code P01 Antiprotozoals, a subgroup of the Anatomical Therapeutic Chemical Classification System
 * Pericarp color1 (p1), a gene in the phlobaphene biosynthesis pathway in maize
 * C1 and P1 (neuroscience), a component of the visual evoked potential
 * P1 nuclease, a nuclease that works on single-stranded DNA as well as RNA

Other sciences

 * Period 1 of the periodic table
 * Pollard's p &minus; 1 algorithm for integer factorization
 * P-ONE - a proposed neutrino detector

Automobiles

 * P1 International, a car club founded in Leatherhead, Surrey, England
 * Alfa Romeo P1, a 1932 Grand Prix car
 * Allard P1, a 1949 British five seater two door sports saloon
 * McLaren P1, a sports car succeeding the McLaren F1.
 * Porsche P1, first electric car produced by Ferdinand Porsche in 1898
 * P-1, development code name of the Subaru 1500 automobile
 * P1 race class in the Le Mans racing series

Aircraft

 * Abrams P-1 Explorer, an American aerial survey aircraft
 * Dewoitine P-1, a Dewoitine aircraft
 * DFW P.1, a passenger aircraft development of the 1916 DFW C.V
 * Paradise P-1 LSA, a Brazilian light-sport aircraft

Rail

 * P1 (AirTrain Newark station), a station on AirTrain Newark, NJ, USA
 * Alsace-Lorraine P 1, a German steam locomotives class
 * LNER Class P1, a class of locomotive designed by Nigel Gresley

Other uses

 * Front-runner, or position 1 (P.1)
 * Papyrus 1, also known as P1, P$1$, or, an early papyrus copy of part of the New Testament
 * Walther P1, an aluminum-framed variant of the Walther P38 pistol
 * Pioneer One, an open source web series
 * P-1 (submarine), a fictional patrol craft in the animated TV series Marine Boy