Orland Kay Armstrong (October 2, 1893 – April 15, 1987) was an American Republican politician and member of the United States House of Representatives, journalist and social activist.

Armstrong's first teaching position came at Southwest Baptist College in Bolivar, Missouri, where he taught English and served as basketball coach.

While serving as an instructor pilot Armstrong made his first foray into the world of journalism by acting as editor of the aviation magazine Propeller.

The articles would lead to Armstrong's appointment as a special investigator by Missouri governor Lloyd Stark in 1938, and his testimony the following year before a Jackson county grand jury looking into the Pendergast machine's activities.

With the advent of World War II, Armstrong expressed isolationist views and was among the earliest to join with his friend Charles Lindbergh in the America First Committee.

From 1944 until 1950 Orland Armstrong served in a variety of appointed governmental roles, including the U.S. Senate committee on the Post Office and civil service.

Then during the Japanese Allied Peace Conference, Armstrong had a public and very heated exchange of words with the Soviet Union's chief delegate Andrei Gromyko over slave labor camps.

Although Gromyko denied the charges, the exchange put a further chill in the Cold War and hampered U.S. diplomatic efforts to bring Soviet influence on North Korean and Communist Chinese leadership in hopes of achieving a peace agreement in Korea.

Armstrong was selected by old friend John Foster Dulles to be Director of Publicity for the U.S. State Department, however before he could take the position it came to light he was under criminal investigation by the Internal Revenue Service.

In 1965 the Internal Revenue Service ruled that Armstrong had not intentionally defrauded the government, and refunded to him nearly $12,000 in overpayments on his income taxes, the fines he had previously paid, and interest.

His articles, some written under pen names, often crusaded for civil rights, decried the growing national debt, and spoke out about the evils of pornography.