CV can stand for:

• aircraft carrier (United States Navy's hull classification symbol)
• Cape Verde Islands (ISO 3166 digram and NATO country code)
• Cardiovascular
• Cargolux (IATA code)
• Central Vermont Railway
• Combat Vehicle
• Constant Velocity joint (mechanical and automotive engineering)
• Cross of Valour (Canadian military decoration)
• Curriculum vitae (a summary of academic and professional history and achievements)
• Coefficient of variation (a measure of the standard devation compared to the mean of a population)

cv can stand for:

• Cheval vapeur (plural Chevaux vapeur; French unit for motor vehicle tax, same as horsepower)
• .cv is the Internet top-level domain for the Cape Verde Islands