Andrew C. Brock served almost eight terms (2003-2017) as a Republican member of the North Carolina General Assembly representing the state's thirty-fourth Senate district, including constituents in Davie, Iredell, Rowan and Yadkin counties. He also served as the Republican deputy whip in the Senate as well as the Joint Caucus Leader.

Brock is a lifelong resident of Davie County. Brock's grandfather, Burr Brock, Sr., served in the North Carolina House of Representatives, as well as the Senate. He is a graduate of Davie County High School.

Brock graduated Western Carolina University, in Cullowhee, North Carolina, where he majored in economics and political science. Brock was active in the Student Government Association and served as student body president. He was a member of the governing board of the University of North Carolina Association of Student Governments. He was also a member of the Western Carolina University Board of Trustees and the Pi Gamma Mu International Honor Society.

After college, Brock worked for the Conference on Poverty to work toward welfare reform in North Carolina. He then worked for United States Senator Lauch Faircloth's re-election campaign. Bill Cobey hired Brock to work as campaign manager on Cobey's campaign for chairman of the North Carolina Republican Party. Brock then worked for the Republican Party of North Carolina. He then worked as a campaign manager for U.S. Congressman Walter Jones. Brock also worked for Citizens for a Sound Economy.

State Senate
Brock was elected to the North Carolina Senate in the fall of 2002. He acted as the deputy Republican whip. Brock was at times the chairman of the Finance Committee, Natural and Economic Resources Appropriations Committee, Agriculture/ Environment/ Natural Resources Committee, General Government, Health & Human Services Committee, and Joint Information Technology Oversight Committee. Brock served as vice-chairman of the Redistricting committee. He also served as a member of the Joint Governmental Operations Committee, the Finance Committee, the Senate Rules Committee, Appropriations/Base Budget Committee, Program Evaluation Committee, the Emergency Response and Preparedness Committee, Joint Education Oversight Committee, Judiciary 1, and the Ways and Means Committee.

He resigned in 2017 to accept a position on the Board of Review for the state Division of Employment Security.  

Personal life
Brock is married to Andrea Gentry of the Pino Community in Davie County, and together they have two daughters and one son, Scarlett Hope, Stella Faith, and Turner Ward.