MRCC — acronym, may refer to: ICAO code for Coto 47 Airport (Costa Rica) Maritime Rescue Coordination Centre, for example: Hong Kong MRCC Mumbai MRCC Medical Representatives Certification Commission Member of the Royal College of Chiropractors, see List of post-nominal letters (United Kingdom) Midwest Regional Climate Center Mildura Rural City Council Mission Regional Chamber of Commerce Mobile Reconnaissance and Command Center, see for example PPRU-1 Multi-Reference Coupled Cluster Multi-Role Combatant Craft, see Wet sub Mumbai Regional Congress Committee, of the Indian National Congress
mRCC — Metastatic renal cell carcinoma