USI or Usi may stand for:
*
Usi (food)
Usi, also referred to as starch, is a starch dish of the Niger delta people of Nigeria. The starch is derived from cassava
''Manihot esculenta'', commonly called cassava (), manioc, or yuca (among numerous regional names), is a woody shrub ...
, a starch dish of the Urhobo people of Nigeria
*
Uši, an album by Czech band Uz jsme doma
*
Usi County, a county in westernmost Chagang province, North Korea
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USI Tech, a suspected ponzi scheme
*
USI Wireless, a Minnesota internet service provider
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User System Interaction, a postgraduate engineering design program in the Netherlands
*
Union of Independent Trade Unions (Portugal)
*
Union of Students in Ireland, the representative body for students' unions in Ireland
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Unione Sindacale Italiana, an Italian trade union
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Union Solidarity International (USi), an international labour organising support organisation
* 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
*
United States of Indonesia, a state in Southeast Asia from 1949 to 1950
*
Universal Stylus Initiative for interoperable active pen styluses for touchscreen devices
*
University of Southern Indiana, a University located in Evansville, Indiana, United States
*
Università della Svizzera italiana, the University of Italian-speaking Switzerland
*
University of Siegen, a University located in Siegen, North Rhine-Westphalia, Germany
* Unlimited Software Inc., see
Distinctive Software
Distinctive Software Inc. (''DSI'') was a Canadian video game developer established in Burnaby, British Columbia, by Don Mattrick and Jeff Sember after their success with the game ''Evolution''. Mattrick (age 17) and Jeff Sember approached Sydney ...
{{disambiguation