William George Johnston (January 23, 1876 – June 6, 1925) was a Canadian provincial level politician from Alberta, Canada.

He served as a member of the Legislative Assembly of Alberta sitting with the Dominion Labor Party caucus from 1921 to his death in 1925.

[1] Upon his arrival to the district of Woolchester, Alberta in 1900, he found employment with the Canadian Pacific Railway as a driver of passenger trains.

[3] While attending the Legislative session in the spring of 1925, Johnston fell ill, complaining of heart problems and returned to his home where he became bedridden.

[2][4] His funeral, "one of the largest ever held in Medicine Hat" at the time, was attended by many members of the UFA cabinet and fellow MLAs.