The secretary of the Army (SA or SECARMY) is a senior civilian official within the United States Department of Defense, with statutory responsibility for all matters relating to the United States Army: manpower, personnel, reserve affairs, installations, environmental issues, weapons systems and equipment acquisition, communications and financial management.

The secretary also communicates Army policies, plans, programs, capabilities, and accomplishments to the public.

As necessary, the secretary convenes meetings with the senior leadership of the Army to debate issues, provide direction, and seek advice.

The secretary of the Army has several responsibilities under the Uniform Code of Military Justice, including the authority to convene general courts-martial.

[3][6] Prior military service is not a requirement, but several have served in the United States armed forces.