CR3 explained

CR3 or CR-3 may refer to:

Science and technology

• Macrophage-1 antigen, an immunological cell surface receptor for a complement component
• CR3, an x86 microprocessor control register
• CR3, a raw image format used by Canon digital cameras since 2018

Transportation

• Cessna CR-3, a racing aircraft designed in 1933
• Curtiss CR-3, a racing aircraft designed in 1921
• County Road 3 (disambiguation), several roads
• Loyang MRT station, Singapore, station code CR3

Other uses

• The royal cypher C III R (sometimes written as CR III) for Charles III Rex (Charles III, King)
• Crystal River 3 Nuclear Power Plant
• CR3, a postcode district in the CR postcode area