Seal

Seal may refer to:

Common uses

Pinniped, a diverse group of semi-aquatic mammals, many of which are commonly called seals, particularly:
- Earless seal, also called "true seal"
- Eared seal
  - Fur seal
Seal (emblem), a device to impress an emblem, used as a means of authentication, on paper, wax, clay or another medium (the impression is also called a seal)
Seal (mechanical), a device which helps prevent leakage, contain pressure, or exclude contamination where two systems join
- Hermetic seal, an airtight mechanical seal
Security seals such as labels, tapes, bands, or ties affixed onto a container in order to prevent and detect tampering

United States Navy SEALs, the principal special operations force of the U.S. Navy
Thai Navy Seals, Thai Navy special operations force modelled on the U.S. Navy SEALs
Naval Special Operations Command, also known as the Philippine Navy SEALs
ROKN UDT/SEALs, a component of the Republic of Korea Navy Special Warfare Flotilla

"Seal", a generic term for the surface treatment of sealed roads (and by extension, a term used for the roads themselves)
Sealing (Mormonism), a religious ordinance
Seal brown
Seal of the prophets, a title given to the Islamic prophet, Muhammad
Seal script, ancient Chinese calligraphy
BYD Seal, an electric sedan
Select Entry Accelerated Learning, a program used in Victoria, Australia, in some secondary schools
sealed, a keyword in Java and C# for constraining inheritance of classes and interfaces (Java also has a keyword non-sealed)