Samuel Henry Miller (April 19, 1840 – September 4, 1918) was an American educator and Civil War veteran who served as a Republican member of the U.S. House of Representatives from Pennsylvania for two terms from 1881 to 1885, and then later a third term from 1915 to 1917.
Born in Coolspring, Pennsylvania (near Mercer) on April 19, 1840, Samuel H. Miller graduated from Westminster College in New Wilmington, Pennsylvania, in 1860. He taught school.
During the American Civil War, Miller served in the Fifty-fifth Regiment of the Pennsylvania Militia.
Miller edited and published the Mercer Dispatch from 1861 to 1870. He also studied law, was admitted to the bar and began his legal practice in Mercer in 1871.
Miller was elected as a Republican to the Forty-seventh and Forty-eighth Congresses (1881-1885), but declined to be a candidate for renomination in 1884.
He resumed the practice of law in Mercer and served as president judge of several courts of Mercer County, Pennsylvania from 1894 to 1904.
He was then elected to the Sixty-fourth Congress (1915-1917), but declined to be a candidate for renomination in 1916.
Miller died in Mercer on September 4, 1918, and was interred at the Mercer Cemetery.