McArthur (February 21, 1857 – June 5, 1911) was a Canadian politician.
He was active in the community, founding the Calgary neighborhood (then village) of Crescent Heights.
He served on the YMCA board of directors in Calgary, and became Deacon of the First Baptist Church.
Archibald used his community involvement to help win a bitter by-election for the Alberta Liberal Party on October 3, 1910, for a seat in the 2nd Alberta Legislature[1] against well known incumbent and Calgary rancher Ezra Riley.
[2] McArthur died a year later in 1911 vacating his seat in the Alberta Legislature.