Samuel Smith MacDonell, KC (February 21, 1823[1] – March 25, 1907) was a lawyer and politician in Ontario, Canada.
MacDonell studied law with Henry Sherwood and was called to the bar in 1847.
He later was named clerk and solicitor for the council for the western district and moved to Sandwich (later part of Windsor).
He then became clerk and solicitor for the united counties of Essex, Kent and Lambton.
[2] His uncle Samuel Smith had served as administrator for Upper Canada.