Rim may refer to:

• Rim (basketball), the hoop through which the ball must pass
  • Breakaway rim, a sprung basketball rim
• Rim (coin), the raised edge which surrounds the coin design
• Rim (crater), extending above the local surface
• Rim (firearms), a projection machined into the bottom of a firearms cartridge
• Rim (novel), by Alexander Besher
• Rim (wheel), the outer part of a wheel on which the tire is mounted
• Slang term for analingus
• "Rim", a song by Brooke Candy featuring Violet Chachki and Aquaria from the album Sexorcism

RIM may stand for:

• Rapid Interim Measures proposed by the Review Body on Bid Challenges under the World Trade Organization's Agreement on Government Procurement
• Reaction injection molding, a type of processing for network polymers
• Recording Industry Association of Malaysia
• Red Island Minerals, Australia coal company
• Reference Information Model, in Health Level Standards 7
• Remote Infrastructure Management of computer systems
• Research in Motion, a Canadian company later named BlackBerry Limited
• Revolutionary Internationalist Movement, an international Maoist organization
• Royal Indian Marine, name of the British Indian navy 1912–1928
• The US military designation for a ship-launched, intercept, guided missile; examples include
  • RIM-66 Standard
  • RIM-7 Sea Sparrow
• Russian Imperial Movement, Russian neo-Nazi paramilitary organization