Andrew Mercer (1829 – 6 June 1902) was Mayor of Dunedin 1873–1874.

After an apprenticeship as a cabinetmaker, he arrived in Port Chalmers aboard the Philip Laing in 1848.

According to an 1848 letter home, Mercer intended for his father and other family to join him.

[2] Mercer opened a grocery store on Princes Street in Dunedin, in partnership with George Ross, and then alone, and then with his son Hector.

[3] Mercer served seven years on the city council, and was a Justice of the Peace.