Ranney Lyman (born 1880) was a cadastral surveyor in South Dakota and Montana for the U.S. General Land Office and its successor, the Bureau of Land Management. His papers consist of a biography (1954) and reminiscence (1970) by Lyman's wife Mabel Kelsey Lyman; general correspondence (1916-1953); survey diaries (1913-1950); financial records; and lists (1903-1949) of survey crew members.