CSMA may refer to:

Organizations

  • Cathedral of Saint Mary of the Assumption (San Francisco, California), principal Catholic church in the San Francisco Archdiocese, US
  • Civil Service Motoring Association, a private motoring organisation in the UK
  • Coastal Sound Music Academy, a choral organization in Coquitlam, British Columbia, Canada
  • Community School of Music and Arts at Finn Center, an art and music school in Mountain View, California, US
  • Congregation of Saint Michael the Archangel, a Catholic religious institute based in Poland

Other uses

  • Carrier-sense multiple access, a MAC networking protocol