CIRA

CIRA may refer to:
 * Canadian Internet Registration Authority
 * Centre d'interprétation et de reconnaissance acoustique of the French Navy (la Marine nationale française)
 * Centre International de Recherches sur l'Anarchisme (CIRA), library of anarchist material in Lausanne, Switzerland
 * Central Illinois Regional Airport, a public airport in McLean County, Illinois
 * Centro Italiano Ricerche Aerospaziali, the Italian Aerospace Research Centre
 * Certified Insolvency and Restructuring Advisor designated by the Association of Insolvency & Restructuring Advisors of Medford, Oregon, United States.
 * Client Initiated Remote Access, a remote access technology from Intel
 * Comprehensive Immigration Reform Act, Senate Proposed Legislation, S. 2611
 * Continuity Irish Republican Army
 * Cooperative Institute for Research in the Atmosphere, Colorado State University
 * Yale University Center for Interdisciplinary Research on AIDS (CIRA)
 * CIRA, COSPAR international reference atmosphere, an empirical model of the upper atmosphere
 * CIRA-FM, a French language Canadian radio station in Montreal, Quebec