Tier

Tier or tiers may refer to:

Groupings

 * Organizational, a ranking relationship involving order in a collective and its subordinate components
 * Ranking, a relationship involving order between a set of observations or variables
 * Data center tiers, Telecommunications Infrastructure Standard for Data Centers, which defines a level in terms of "tiers"
 * Multitier architecture, a tier-based system in software architecture
 * Tier (emission standard), rankings of emission standards in the US
 * Standings or rankings, listings which compare sports teams or individuals, institutions, nations, companies, or other entities by ranking them in order of ability or achievement
 * Tier list, a list of playable characters ranked by their abilities in competitive settings
 * Tiers of suppliers in a supply chain

Other uses

 * A row of moorings or anchorages for ships
 * Taiwan Institute of Economic Research, one of two major economic research institutes in Taiwan
 * Tier, a fictional character in Marvel Comics; son of Hrimhari and Wolfsbane
 * "Tier" (song), by German band Rammstein
 * Tier Mobility, a shared e-scooter operator company from Germany
 * Tiers, a variant of the surname Thiers
 * Tiers, a French term for tremissis, coins of the Roman and Merovingian periods
 * The Tiers, a 19th-century name for the Adelaide Hills, South Australia
 * Tiers, South Tyrol, a municipality in Italy