George Washington Armstrong (February 27, 1827 – July 1, 1877) was an American politician and businessman who served as the first Minnesota State Treasurer from 1858 to 1860.
He previously served as the fourth and final Minnesota Territorial Treasurer from 1857 to 1858.
Vernon Banner (Ohio), serving as the paper's joint editor and proprietor from 1847 to 1850.
Armstrong moved to Saint Paul, Minnesota, during the spring of 1863, where he engaged in the real estate, insurance, and loan business.
Armstrong died of a stroke at the age of 50 in Saint Paul, Minnesota on July 1, 1877.