William Somerville Edmiston (November 10, 1857 – July 24, 1903) was an architect and politician in present-day Alberta, Canada. He was a member of the Edmonton Town Council and for two terms, the mayor of Edmonton. Edmiston was also very active in the sporting affairs of Edmonton, participating in and managing many sporting activities and clubs. He died after an accident which resulted in heart failure in 1903; an industrial park in Edmonton was subsequently named after him.