| Joseph Elijah Armstrong | |
| Constituency Mp1: | Lambton East |
| Parliament1: | Canadian |
| Predecessor1: | Oliver Simmons |
| Successor1: | Burt Wendell Fansher |
| Term Start1: | 1904 |
| Term End1: | 1921 |
| Predecessor2: | Burt Wendell Fansher |
| Successor2: | Burt Wendell Fansher |
| Term Start2: | 1925 |
| Term End2: | 1926 |
| Birth Date: | 9 November 1866 |
| Birth Place: | York County, Canada West |
| Party: | Conservative |
Joseph Elijah Armstrong (November 9, 1866 - January 31, 1931) was a Canadian politician.
Born in York County, Canada West, Armstrong was educated in National School of Elocution and Oratory in Philadelphia, PA. An oil producer, a manufacturer and farmer, he first ran unsuccessfully as the Protestant Protective Association candidate for the House of Commons of Canada in the electoral district of Lambton East in the 1896 federal election. Switching to the Conservative Party, he was elected in a 1904 by-election. He served from 1904 to 1921 and from 1925 to 1926.