Mathematics

• Unit (ring theory)
  Unit (ring theory)
  In mathematics, an invertible element or a unit in a ring R refers to any element u that has an inverse element in the multiplicative monoid of R, i.e. such element v that...
  
  , an element that is invertible with respect to ring multiplication
• 1 (number), the unit number
• Unit vector, a of the class of objects being studied

Science and technology

• Units (software), a software program for unit conversion
• Units of measurement
  Units of measurement
  A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention and/or by law, that is used as a standard for measurement of the same physical quantity. Any other value of the physical quantity can be expressed as a simple multiple of the unit of...
  
  , a standardized quantity of measurement of a physical quantity
• Enzyme unit
  Enzyme unit
  The enzyme unit is a unit for the amount of a particular enzyme.One U is defined as the amount of the enzyme that catalyzes the conversion of 1 micro mole of substrate per minute...
  
  
• Unit of electricity, one kilowatt hour of mains electricity
• Unit operation
  Unit operation
  In chemical engineering and related fields, a unit operation is a basic step in a process.Unit operation involves bringing a physical change such as separation, crystallization, evaporation, filtration etc.. For example in milk processing, homogenization, pasteurization, chilling, and packaging are...
  
  , a basic step in a chemical plant process
• Functional unit, a component of a computer system such as the CPU
• Unit of blood, a measurement in blood transfusion
  Blood transfusion
  Blood transfusion is the process of receiving blood products into one's circulation intravenously. Transfusions are used in a variety of medical conditions to replace lost components of the blood...
  
   equal to one pint or 450 ml
• Unit of alcohol
  Unit of alcohol
  Units of alcohol are a measure of the volume of pure alcohol in an alcoholic beverage. Such units are used in some countries asa guideline for a drinker's alcohol consumption....
  
  , 10 millilitres of pure ethanol in the United Kingdom
• Rack unit
  Rack unit
  A rack unit or U is a unit of measure used to describe the height of equipment intended for mounting in a 19-inch rack or a 23-inch rack...
  
  , a measure to describe the height of rack-mounted computer equipment
• Geological unit or rock unit, a volume of identifiable rock or ice

Entertainment and the arts

• UNIT
  UNIT
  UNIT is a fictional military organisation from the British science fiction television series Doctor Who, Torchwood and The Sarah Jane Adventures...
  
  , a fictional military organization in the science fiction television series Doctor Who
• Unit (album)
  Unit (album)
  This was the second, and last, Regurgitator album to be pressed on vinyl until 2011 when SuperHappyFunTimeFriends was released.- Singles :The singles from this album in Australia are:* "Everyday Formula"* "Black Bugs"* "Polyester Girl"...
  
  , by the Australian band Regurgitator
• Unit (art collective)
  Unit (art collective)
  Unit was a short-lived but influential artist's collective in east London which organised exhibitions between 1997-1999 - a crucial moment in London's burgeoning contemporary art scene. Many of the artists that participated in Unit exhibitions have moved on to achieve international acclaim...
  
  , a British artists' collective
• G-Unit
  G-Unit
  G-Unit is an American hip hop group originating from New York City formed by 50 Cents. G-Unit emerged on the New York scene by independently releasing several mix tapes...
  
  , a hip-hop music group
• The Units
  The Units
  The Units are a defunct, early electronic music/punk rock/New Wave/synthpunk band founded in San Francisco in 1978 and active until 1984.One of America's first electronic New Wave bands, they are widely cited as pioneers of a genre now known as "synthpunk." The Units were notable for their use of...
  
  , a synthpunk band
• The Unit
  The Unit
  The Unit is an American action-drama television series that focuses on a top-secret military unit modeled after the real-life U.S. Army special operations unit commonly known as Delta Force...
  
  , an American television series
• Second unit
  Second unit
  In film, the second unit is a team that shoots subsidiary footage for a motion picture. Its work is distinct from that of the first unit, which shoots all scenes involving principal actors...
  
  , a team that shoots footage which is of lesser importance for the final motion picture
• Unit of action
  Unit of action
  Units of Action, or Units , were first suggested by Konstantin Stanislavski as a means of helping actors determine the through line or super objective of a role. A unit is a discrete piece of action in a play-text, marked by a significant change in action. This could be a change in what the...
  
  , a discrete piece of action (or beat) in a theatrical presentation
• UNIT Post Production
  UNIT Post Production
  UNIT is one of the UK’s leading post-production and creative services companies. Housed in a new 9,400 square foot facility, it is in the heart of Soho on Great Marlborough Street....
  
  , a British company
• The Tony Rice Unit, an American bluegrass group

Other uses

• Unit (housing)
  Unit (housing)
  A unit is a measure of housing equivalent to the living quarters of one household.In common speech in Australia and New Zealand, the word "unit", when referring to housing, usually means either: an apartment, ;or a villa unit or home unit, where a group of dwellings...
  
  , a self-contained suite of rooms within a set of similar dwellings
• Unit of account
  Unit of account
  A unit of account is a standard monetary unit of measurement of value/cost of goods, services, or assets. It is one of three well-known functions of money. It lends meaning to profits, losses, liability, or assets....
  
  , a monetary unit of measurement
• An apartment
  Apartment
  An apartment or flat is a self-contained housing unit that occupies only part of a building...
  
  
• Multiple unit
  Multiple unit
  The term multiple unit or MU is used to describe a self-propelled carriages capable of coupling with other units of the same or similar type and still being controlled from one driving cab. The term is commonly used to denote passenger trainsets consisting of more than one carriage...
  
  , a passenger train where each carriage has it own motors
• Military unit
• Strategic business unit
  Strategic business unit
  In essence, the SBU is a profit making area that focuses on a combination of product offer and market segment, requiring its own marketing plan, competitor analysis, and marketing campaign.A Strategic Business Unit emerges at the cross-over between:...
  
  
• In real time strategy games, an individual (or squad, depending on the game) infantry or vehicle