Arse or ARSE may refer to:

• the British/Irish-English vulgarism for the buttocks, equivalent to "ass" in American or Canadian English
  • "arsehole," a similar British/Irish term for the anus, equivalent to "asshole" in American or Canadian English
• Arylsulfatase E, an arylsulfatase gene; deficiencies of it are associated with X-linked recessive chondrodysplasia punctata
• Animal Research - Scientific and Experimental, a fictional animal research centre in the book The Plague Dogs.
• Seigneurie d'Arse, a French wine from the Fitou region.

See also

• ARSS, the US Government's prototype Autonomous Rotorcraft Sniper System
• The Army Rumour Service (ARRSE), an unofficial British Army website and forum
• Ass, North American English equivalent

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