Noah Armstrong (January 18, 1823 – April 21, 1907) was a superintendent of the Glendale smelter and discoverer of the Hecla Mine in western Montana.

Built in 1882,[1][4] it is a structure listed on the National Register of Historic Places and the birthplace of Spokane in 1886.

In 1877,[8] with the growing demand for finances to expand operations at Glendale, Armstrong went back to Indianapolis and consolidated these two smaller enterprises into one company which he called "The Hecla Consolidated Mining Company.

"[2][9] The Glendale smelter produced about one million ounces of silver, and thousands of tons of lead and copper annually until it burned down in July, 1879,[9] at a reported loss of $100,000.

[1] Armstrong's horse Spokane, a chestnut said to have "a coat of copper like the mines of Montana,"[6][11] won the 1889 Kentucky Derby, beating the Kentucky favorite Proctor Knott (named for then Governor J. Proctor Knott) by a nose.