Angus McMillan (October 29, 1817 – March 13, 1906) was a Scottish-born merchant and political figure in Prince Edward Island.
He was born in Argyll, the son of Hugh McMillan, was educated in Scotland and came to Prince Edward Island with his family in 1834, settling at [Wheatley River.
In 1866, he moved to Summerside, where he established additional shipbuilding yards.
McMillan was first elected in an 1868 by-election, defeating Conservative leader James Colledge Pope.
He was a member of the Executive Council from 1878 to 1879 and from 1891 to 1900, serving as provincial secretary and treasurer and commissioner of crown and public lands.