Ernest Noble Warner (July 23, 1868 - July 8, 1930) was a Wisconsin schoolteacher turned lawyer who served one term as a Republican member of the Wisconsin State Assembly from Madison. He was the son of Clement Warner, and the grandfather of Fred A. Risser. Warner Park in Madison is named after him.
Warner was born on his parents' farm in the town of Windsor in Dane County, Wisconsin on July 23, 1868, son of Col. Clement E. and Eliza (Noble) Warner. (Clement Warner was at that time a state senator, and would later serve a term in the Assembly.) Ernest attended the district public school, and graduated from the old Madison High School in 1885, and the University of Wisconsin-Madison's modern classics course in 1889. He taught a country school for one term while attending the University, and was principal of Mazomanie High School for one year after graduation. He graduated from the Law Department of the University in 1892, although he was admitted to practice upon passing the state bar examinations in July, 1891; and took up law practice in Madison. On July 5, 1894 he married Lillian Dale Baker, a classmate at Madison High School and also at the University of Wisconsin. They maintained a family farm, Merrill Springs Farm, at a location which was then outside Madison.
Warner was the Republican nominee for district attorney of Dane County in 1892 but lost; was a law examiner in the Attorney General's department from 1899–1903; and was secretary of the Dane County Republican campaign committee 1902-1904.