Andrew Archibald Macdonald, PC (14 February 1829 – 21 March 1912) served as the fourth Lieutenant Governor of Prince Edward Island from 1 August 1884 to 2 September 1889, and was one of the fathers of Canadian Confederation.

Andrew Macdonald was a member of the Executive Council from 1867 to 1872 and again from 18 April 1872 until Prince Edward Island joined Confederation in 1873.

He was Postmaster at Charlottetown until 1 August 1884 as well as Post Office Inspector for the Province from 1880 until that date when he was appointed as the seventeenth Lieutenant Governor of Prince Edward Island since the creation of the Colony in 1763.

Andrew Macdonald was a member of the Executive Council from 1867 to 1872 and again from 18 April 1872 until Prince Edward Island joined Confederation in 1873.

He was Postmaster at Charlottetown until 1 August 1884 as well as Post Office Inspector for the Province from 1880 until that date when he was appointed as the seventeenth Lieutenant Governor of Prince Edward Island since the creation of the Colony in 1763.

He was a delegate to the International Convention at Portland, U.S., in 1868 and a member of the Board of Education from 1867 to 1870, a public trustee under the Land Purchase Act (1875) and Chief of the Caledonia Club.