Robert Lewis Brown Sr. (May 25, 1892 – April 2, 1948) was a United States district judge of the United States District Court for the District of Montana.

- Gender
- Male
- Race
- White
Prior employment
District of MontanaAssistant U.S. attorney · 1934–1945- Silverbow County, MontanaDeputy county attorney · 1932–1934
- Private practice, Butte, Montana1926–1932
- Anaconda Copper Mining Company, Butte, MontanaContract miner · 1925
- Private practice, Philipsburg, Montana1918–1924
- Granite County, MontanaCounty attorney · 1917–1918
Appointments
1945–1948 · Appointed by Franklin D. Roosevelt (Democratic)Term ended: Death
Education
- University of Montana School of LawLL.B. · 1916