CA

The term CA commonly means:

• California, a U.S. state
• Canada, a nation on the North American continent
• Chartered Accountant
• Compressed Air, such as "CA Piping"
• Certificate Authority
• Cyanoacrylate, a chemical compound

See numerous other uses below, by category.

The term ca commonly means (more below):

• circa, as meaning approximately (ca.)
• .ca, Internet country code for Canada

The term Ca commonly means:

• Calcium, as a symbol for the chemical element (Ca)

The term cA commonly means:

• Centiampere, an SI unit of electric current (cA)