DCA can stand for several things, depending on the context. Here are a few of the most common:

• Diploma in Computer Application: A diploma-level course focusing on computer basics and software applications.
• Direct Current Alternator: A type of electrical generator.
• Dollar Cost Averaging: An investment strategy.
• Developmental Coordination Disorder: A condition affecting motor skills.
• Debt Collection Agency: A company that recovers debts.
• Defense Communications Agency: A defunct agency of the United States Department of Defense; now the Defense Information Systems Agency (DISA).^[1]