Uni or UNI may refer to:

• uni, a shortened word for university
• University Professors Program, an interdisciplinary program for gifted students at Boston University
• The University of Sydney (Australia)
• University High School (Los Angeles, California)
• University High School (Irvine, California)
• University Laboratory High School (Urbana, Illinois)
• Union Nationale Inter-universitaire, a French right-wing union of university students
• National University of Engineering (Universidad Nacional de Ingenieria), Lima, Peru
• University of Northern Iowa
• Independente University (Universidade Independente), Lisbon, Portugal

Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and other European languages, they are used to coin numerous series of words, such as unicycle – bicycle – tricycle, dyad – triad – decade, biped – quadruped, September – October – November – December, decimal – hexadecimal, sexagenarian – octogenarian, centipede – millipede, etc. There are two principal systems, taken from Latin and Greek, each with several subsystems; in addition, Sanskrit occupies a marginal position. There is also an international set of metric prefixes, which are used in the metric system, and which for the most part are either distorted from the forms below or not based on actual number words.

Ugni molinae, commonly known as Chilean guava, or strawberry myrtle, is a shrub native to Chile and adjacent regions of southern Argentina. The local Spanish name is murta, and the Mapuche Native American name is "Uñi". It is in the same botanical family as the guava.