James Newton Ashmore (November 11, 1878 – April 26, 1944) was an American football, basketball and baseball coach and college athletics administrator.

He served as the head football coach at the Washington Agricultural College and School of Science—now known as Washington State University—(1903), Millikin University (1904–1906, 1909–1913), Western Maryland College—now known as McDaniel College–(1907–1908), and DePauw University (1922–1924), compiling a career college football record of 61–46–9.

In addition, he was the head baseball coach at Washington Agricultural (1904), Millikin (1905–1906, 1910–1914, 1940), Colorado, (1915–1917), Iowa (1920–1922), DePauw (1923–1924) and North Carolina (1927–1931).

Ashmore was the eighth head coach for the Washington State Cougars football team and held the position for the 1903 season.

He died on April 26, 1944, at the Veteran's Hospital in Danville, Illinois, following a illness of ten weeks.