A taxi, also known as a taxicab or simply a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride.

A taxi is known by many names depending on the country, the local dialect, and the historical context of the vehicle. In most English-speaking countries, the most common alternative is "cab", derived from the "hansom cab" of the 19th century. In London, purpose-built taxis are legally known as "Hackney Carriages", though they are colloquially called "Black Cabs". In many parts of the UK and some Commonwealth countries, pre-booked taxis are referred to as "minicabs". Globally, you will encounter diverse terms: in many African and Caribbean nations, shared taxis or minibuses are called "jitneys" or "bush taxis". In New York, the iconic vehicles are simply "yellow cabs". In some older literature or formal contexts, you might see the term "hack" used to describe a driver or the car itself. In Spanish-speaking regions, it remains "taxi", but in parts of Southeast Asia, specialized local versions go by names like "tuk-tuk" or "songthaew", representing the unique cultural variations of the for-hire transportation industry.