"Peg" MacNeill (October 15, 1912 – July 12, 2000) was an educator and political figure on Prince Edward Island.
He was born in Summerside, Prince Edward Island, the son of Daniel F. MacNeill and Pearl Tamlyn, and was educated at Prince of Wales College, Saint Dunstan's College, Saint Francis Xavier University and the University of New Brunswick.
He married Anne Marie de la Garde in 1940.
MacNeill was elected to the provincial assembly in a 1946 by-election held following the death of his father.
His brother Hubert and his uncle Leonard M. MacNeill also served in the provincial assembly.