RRA can refer to:
Arrow-Pratt measure of relative risk-aversion Radioreceptor assay, a test to determine the binding affinity of a radioactive-labelled substance to its receptor Rahanweyn Resistance Army, also known as the Reewin Resistance Army, an armed faction in Somalia Russell Reynolds Associates, a global executive-search, and leadership and succession consulting firm. Rail America Inc., NYSE ticker code RRA Rapid Rural Appraisal, a term for Participatory rural appraisal Reiulf Ramstad Arkitekter, a Norwegian architecture and design studio in Oslo Revenue Reconciliation Act of 1993, US tax reform legislation Round Robin Archive, a database term used by the RRD Editor Red Ribbon Army, a fictional military organization that appears in the Dragon Ball metaseries Road Records Association, a British cycle racing organisation Rock River Arms, an American firearms manufacturing company Internal Revenue Service Restructuring and Reform Act of 1998 Rural Reconstruction Association, a British agricultural group Routing and Remote Access, a Microsoft API and server software Richardson Racing Automobiles, a defunct British racing car constructor Religious Research Association, an association of researchers and religious professionals
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