Walter Folger Brown (May 31, 1869 – January 26, 1961) was an American politician and lawyer who served as the Postmaster General of the United States from March 5, 1929, to March 4, 1933, under Herbert Hoover's administration.

He was educated in Toledo Public Schools and Western Reserve Academy.

From 1911 to 1912 he was a member of the Ohio Constitutional Convention and later chairman of the Congressional Joint Committee on Reorganization of Executive Departments from 1921 to 1924.

In 1927, President Calvin Coolidge appointed him to be the United States Assistant Secretary of Commerce.

He was also a delegate to the Republican National Convention in Ohio in 1940 and 1944, and served as the president of the Toledo Humane Society from 1911 until 1961.