Sir Henry Smith (April 23, 1812 – September 18, 1868) was a Canadian lawyer and political figure.

The son studied law with Christopher Alexander Hagerman and was called to the bar in 1834.

He was a friend of Sir John A. Macdonald and also supported him politically for much of that time.

In 1854, he was named Solicitor General for Canada West in the Macnab-Morin government.

Smith also served as lawyer for the Grand Trunk Railway in Kingston.