| Walter Plummer | |
| Birth Date: | 8 November 1858 |
| Birth Place: | Newcastle upon Tyne, England |
| Death Place: | Newcastle upon Tyne, England |
| Occupation: | Businessman, politician |
| Party: | Conservative Party |
| Office: | Member of Parliament |
| Constituency: | Newcastle-upon-Tyne |
| Term Start: | 1900 |
| Term End: | 1906 |
Sir Walter Richard Plummer (8 November 1858 - 10 December 1917) was a British politician and businessman who was Conservative MP for Newcastle-upon-Tyne, a two-member constituency at the time.
He won the seat with another Conservative in 1900, but they lost it to Liberal and Labour candidates in 1906. He was knighted in 1904.
He died in Newcastle on 10 December 1917.[1]