Tier 1

Tier 1 or Tier One may refer to:

Tier 1 capital, the core measure of a bank's financial strength
Tier 1 network, category of Internet backbone network
Scaled Composites Tier One, a suborbital human spaceflight program
Tier 1 nations in rugby union
WTA Tier I tournaments, a series of elite women's tennis tournaments
Tier 1 visas under the Points-based immigration system (United Kingdom)
Tier 1 – UK Nuclear Site Management & Licensing, nuclear site management licensees
Tier One (military), the highest level of military special forces, as in the highest trained and usually the most secretive.
Tier 1 in the First COVID-19 tier regulations in England, the lowest concern
Tier 1 in the Second COVID-19 tier regulations in England, the lowest concern
Tier I, a data center standard
Tier I, in United States vehicle emission standards
In a supply chain, those suppliers who sell to the manufacturer or main customer directly

See also