Mini (stylised all-uppercase as MINI) is a British automotive brand founded in Oxford in 1969, marketed by German multinational automotive company BMW since 2000, and used by them for a range of small cars assembled in the United Kingdom, Austria, Netherlands (until 16 February 2024), China, and Germany. The current Mini range includes the Cooper Hardtop/Hatch/Convertible (three and five-door hatchback), Aceman and Countryman (five-door crossovers). The word Mini has been used in car model names since 1959, and in 1969 it became a marque in its own right when the name "Mini" replaced the separate "Austin Mini" and "Morris Mini" car model names. BMW acquired the brand in 1994 when it bought Rover Group (formerly British Leyland), which owned Mini, among other marques.

The original Mini was a line of British small cars manufactured by the British Motor Corporation (BMC), which in 1966 became part of British Motor Holdings. This merged with Leyland Motors in 1968 to form British Leyland. In the 1980s, British Leyland was broken-up and in 1988 Rover Group, including Mini, was acquired by British Aerospace. Mini models included the Morris Mini-Minor and the Austin Seven, the Countryman, Moke, 1275GT and Clubman. Performance versions of these models used the name Cooper, due to a partnership with racing team owner John Cooper. The original Mini continued in production until 2000.

Following BMW's acquisition of Rover Group, BMW broke up the company but retained the Mini brand, beginning development of a modern successor to the Mini which was launched in 2001 by BMW and built at the historic former Morris Motors 'Plant Oxford' site in Cowley, Oxfordshire. The Mini Clubman, Coupe and Roadster were also assembled here. The third (F57) generation Mini Convertible and second (F60) generation of the Countryman were assembled at VDL Nedcar in Born, Netherlands. The Mini (F56) 3-door Hatch/Hardtop was assembled at both plants, with the (F55) 5-door being exclusively assembled at Oxford. The Paceman and first generation (R60) Countryman were assembled by Magna Steyr in Austria. The third generation (U25) of the Mini Countryman is produced in Germany at BMW's Leipzig plant. From 2024, all combustion engined (F65/F66/F67) Mini Cooper hatch and convertible production will be centred at Oxford. A total of 301,526 Mini vehicles by BMW were sold worldwide in 2012.

Mini vehicles have been active in rallying and the Mini Cooper S won the Monte Carlo Rally on three occasions, in 1964, 1965 and 1967. Mini participated in the World Rally Championship in 2011 and 2012 through the Prodrive WRC Team.

The original two-door Mini was a small car produced by the British Motor Corporation (BMC) and its successors from 1959 until 2000. It is considered an icon of the 1960s, and its space-saving front-wheel-drive layout (which allowed 80% of the area of the car's floorpan to be used for passengers and luggage) influenced a generation of car-makers. The vehicle is in some ways considered the British equivalent to its German contemporary, the Volkswagen Beetle, which enjoyed similar popularity in North America. In 1999 the Mini was voted the second most influential car of the 20th Century, behind the Ford Model T.

This distinctive two-door car was designed for BMC by Sir Alec Issigonis. It was manufactured at the Longbridge and Cowley plants in England, the Victoria Park / Zetland British Motor Corporation (Australia) factory in Sydney, Australia, and later also in Spain (Authi), Belgium, Chile, Italy (Innocenti), Portugal, South Africa, Uruguay, Venezuela and Yugoslavia. The Mini Mark I had three major UK updates: the Mark II, the Clubman and the Mark III. Within these was a series of variations including an estate car, a pickup truck, a van and the Mini Moke—a jeep-like buggy. The Mini Cooper and Cooper "S" were sportier versions that were successful as rally cars, winning the Monte Carlo Rally four times from 1964 through to 1967, although in 1966 the Mini was disqualified after the finish, along with six other British entrants, which included the first four cars to finish, under a questionable ruling that the cars had used an illegal combination of headlamps and spotlights. Initially Minis were marketed under the Austin and Morris names, as the Austin Seven and Morris Mini-Minor, until Mini became a marque in its own right in 1969. The Mini was again marketed under the Austin name in the 1980s.

In the 1990s, BMW was seeking to broaden its model range through the addition of compact cars and SUVs. This sparked a series of compact car concept vehicles from the company during the early 1990s. The first were the E1 and Z13, powered by an electric motor and a rear-mounted 1100 cc BMW motorcycle engine, respectively.

In early 1994, BMW acquired the Rover Group from British Aerospace, which owned Mini, among other brands. BMW insisted that even a compact model must feature traditional BMW characteristics (such as rear wheel drive) to uphold the company's standards and image. The "MINI" marque, however, did not share these standards and BMW saw this as an opportunity to create a competitively priced, yet premium, compact car. This formed BMW's plan to launch the premium BMW 1 Series and the mid-range Mini.