Jacob Dockstader Buell (October 4, 1827 – January 1, 1894) was a lawyer and political figure in Ontario, Canada.

He represented Brockville in the House of Commons of Canada from 1872 to 1878 as a Liberal member.

[1] He was born in Brockville, Upper Canada,[1] the son of William Buell, and was educated there.

[3] His first wife was Susan Chaffey; after her death in 1857, he married Margaret Sophia Senkler in 1861.

Buell was a Lieutenant-Colonel in the local militia, and raised the Brockville Infantry Company in 1862 after the Trent Affair.