Charles Nelson Pray (April 6, 1868 – September 12, 1963) was a U.S. Representative from Montana.
Born in Potsdam, St. Lawrence County, New York, Pray attended the public schools in Salisbury and Middlebury, Vermont and graduated from Middlebury High School. He attended Middlebury College from 1886–88 and graduated from the Chicago College of Law (today called the Chicago-Kent College of Law).
Pray was admitted to the bar in 1892 and commenced practice at Fort Benton, Montana, in 1896. He served as assistant prosecuting attorney of Chouteau County in 1897 and 1898. Pray was elected prosecuting attorney in 1898 and reelected in 1900, 1902, and 1904.