William or Bill Monroe may refer to:

• Bill Monroe (1911–1996), American bluegrass musician
• Bill Monroe (1900s infielder) (c. 1877–1915), Negro league baseball player
• Bill Monroe (1920s infielder), Negro league baseball player
• Bill Monroe (journalist) (1920–2011), American journalist and NBC News correspondent
• William Newton Monroe (fl. 1879–1881), founder of Monrovia, California
• William Monroe, for whom William Monroe High School in Virginia was named in 1925
• William T. Monroe, United States Ambassador to Bahrain in 2004–2007
• William Monroe, character in the 2020 film Inheritance

• William Monroe Trotter (1872–1934), American banker and activist
  • William Monroe Trotter House, a Boston landmark
• William Munroe (disambiguation)

This disambiguation page lists articles about people with the same name.
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