P11

P11, P-11 or P.11 may refer to:

In government and politics

• P11D, a tax form used in the United Kingdom

In military

• Heckler & Koch P11, a special purpose Heckler & Koch pistol designed to be used underwater
• Heckler & Koch HK4, a pistol produced by Heckler & Koch, which was used by the German military as the "P11"
• Kel-Tec P-11, a semi-automatic pistol designed for concealed carry
• Piaggio P.11, a variant of British 1928 Blackburn Lincock fighter aircraft
• PZL P.11, a fighter aircraft used by the Polish Air Force during the invasion by Germany in 1939

In science and academia

• Pioneer 11, a satellite launched to explore Jupiter and the outer solar system
• p11 protein, a protein found in the brain of humans and other mammals
• Pseudomonas sRNA P11, a gene of the pathogen Pseudomonas aeruginosa

In arts and culture

• Painters Eleven, sometimes written as P11 or Painters 11, a group of abstract painters active in Canada in the 1950s

See also

• 11P (disambiguation)

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