USI

USI or Usi may stand for:

Organizations

USI Tech, a suspected ponzi scheme
USI Wireless, a Minnesota internet service provider
Union of Independent Trade Unions (Portugal)
Union of Students in Ireland, the representative body for students' unions in Ireland
Unione Sindacale Italiana, an Italian trade union
Union Solidarity International (USi), an international labour organising support organisation
Unlimited Software Inc., see Distinctive Software

Usı, Tatarstan, a place in Russia
Usi County, a county in westernmost Chagang province, North Korea
United States of Indonesia, a state in Southeast Asia from 1949 to 1950
University of Southern Indiana, a University located near Evansville, Indiana, United States
University of Siegen, a University located in Siegen, North Rhine-Westphalia, Germany
Università della Svizzera italiana, the University of Italian-speaking Switzerland

Usi (food), a starch dish of the Urhobo people of Nigeria
Uši, an album by Czech band Uz jsme doma
User System Interaction, a postgraduate engineering design program in the Netherlands
Unique Student Identifier, a unique identifier for all students in Australia
Unique Swap Identifier, see Unique Transaction Identifier, identifier for trades mandated by financial markets regulation
Universal Stylus Initiative for interoperable active pen styluses for touchscreen devices
USI: Under Special Investigation, 2010 TV series