Razor clam is a common name for long, narrow, saltwater clams, in the genera Ensis, Siliqua, Solecurtus, and Solen, including:
- Atlantic jackknife clam, Ensis directus
- Razor shell, Ensis arcuatus
- Siliqua alta, the northern or Arctic razor clam
- Siliqua costata, Atlantic razor clam
- Pacific razor clam, Siliqua patula
- Gould's razor shell, Solen strictus
- Rosy razor clam, Solecurtus strigilatus