Eugene Edward Siler Sr. (June 26, 1900 – December 5, 1987) was an American politician and member of the United States House of Representatives from Kentucky between 1955 and 1965.

He abstained from alcohol, tobacco, and profanity; and, as a lawyer, rejected clients seeking divorces or who were accused of alcohol-related crimes.

He stated that permitting these ads was akin to allowing the "harsh hussy" to advertise in "the open door of her place of business for the allurement of our school children".

Like his friend and fellow Republican, Representative Harold Royce Gross, Siler considered himself a fiscal watchdog.

Siler was a consistent opponent of foreign aid; he was one of only two congressmen to vote against John F. Kennedy's call up of reserves during the Berlin crisis.

In 1964, after deciding not to seek reelection, he quipped, in jest, that he would run for President as an antiwar candidate—he pledged to resign after one day in office after ordering the troops brought home.

He considered the Gulf of Tonkin Resolution, which authorized President Johnson to take "all necessary steps" in Vietnam, as a "buck-passing" pretext to "seal the lips of Congress against future criticism."

In 1968, the worsening situation in Vietnam prompted Siler to return to politics, unsuccessfully seeking the Republican U.S. Senate nomination.