Sizemore is a family name that may refer to:
- Bill Sizemore (born 1951), political activist in Clackamas, Oregon
- Chris Costner-Sizemore (born 1927), patient with multiple personality disorder
- Grady Sizemore III (born 1982), professional baseball player for the Cleveland Indians
- Jason Sizemore, American writer and editor
- Scott Sizemore (born 1985), professional baseball player for the Oakland Athletics
- Ted Sizemore (born 1945), former professional baseball player
- Tom Sizemore (born 1961), American film and television actor
- Grant Sizemore (born 1986), American bicycle framebuilder
| This page or section lists people with the surname Sizemore. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link. |