Donald "Don" MacDonald is a former politician from Alberta, Canada. He served in the Legislative Assembly of Alberta from 1992 to 1993.

MacDonald first ran for a seat to the Alberta Legislature in a by-election held on October 26, 1992, in the electoral district of Three Hills as a candidate of the Liberal Party. He won the district with 46% of the popular vote in a stunning upset.^[1]

A few months later, in the 1993 Alberta general election, MacDonald ran in the new electoral district of Three Hills-Airdrie as his old riding was abolished during redistribution. He was defeated by Progressive Conservative candidate Carol Haley by a wide margin.^[2]

In the 1997 Alberta general election, he ran under the Social Credit banner in the district of Olds-Didsbury-Three Hills. He finished second to Progressive Conservative candidate Richard Marz.^[3]

MacDonald holds the record for the shortest time served in the Alberta legislature between election and defeat, at seven months and 20 days.^[4]