Ring

Ring may refer to:

Ring (mathematics), an algebraic structure
* Annulus, various ring-shaped objects
Ring structures in chemistry, such as aromatic hydrocarbons and heterocyclic compounds
Planetary ring, a flat disc-shaped ring of matter orbiting a planet
Growth rings, usually a synonym for tree rings
Ring species, populations in biology which are difficult to properly categorize into separate species
Ring circuit, ring final circuit
Ring armature, in electric motors
O-ring, a loop of elastomer with an o-shaped cross-section, used as a mechanical seal
* Piston ring, an open-ended ring that fits into a groove on the outer diameter of a piston

Ring (computer security), rings of protection
Token ring, a networking technology
Web ring, a group of independent but related web sites linked to each other in sequence

Planetary ring
Ring (telephone), the action a telephone performs when it is triggered by an incoming call
Rings (gymnastics), an artistic gymnastics apparatus traditionally used by male gymnasts
Ring (diacritic), as in "Åmål"
Canal ring, a circular canal route
A ring road, or beltway, a highway around a city
A crime ring; see organized crime
The Olympic rings, the symbol of the modern Olympic Games
Onion rings, a type of fast food

Rings (Legend of Zelda), items in the Zelda series which provide special benefits when obtained
Rings (Sonic the Hedgehog), items which provide protection against injury in the Sonic the Hedgehog series
Ring (Suzuki novel)
Ring (film), or Ringu, a 1998 Japanese horror film
The Ring (film), a 2002 American adaptation of the Japanese film
Ring (Baxter novel), a science fiction novel by Stephen Baxter
Ringworld, a science fiction novel by Larry Niven
The Lord of the Rings, a famous fantasy saga set in Middle-earth
Ring Magazine, a boxing magazine
Der Ring des Nibelungen, a series of four operas by Richard Wagner
RINGS, a Japanese professional wrestling promotion
Boxing ring, the space in which a boxing match occurs
Ryzom Ring, MMO Editor for The Saga of Ryzom