A toga is a distinctive garment of ancient Rome, which was a roughly semicircular cloth, between 12 and 20 feet in length, draped over the left shoulder and around the body. It was considered formal wear and was generally reserved for citizens. The toga was an approximately semi-circular woollen cloth, usually white, worn draped over the left shoulder and around the body. The word "toga" probably derives from tegere, to cover. There were many kinds of toga, each reserved by custom to a particular usage or social class. For example, the toga virilis ("toga of manhood") also known as toga alba or toga pura was a plain white toga, worn on formal occasions by adult male commoners, and by senators not having a curule magistracy. It represented adult male citizenship and its attendant rights, freedoms, and responsibilities; traditionally given at a fathers discretion to his son during the feast of Liberalia, to mark the onset of puberty and legal "coming of age", at around 14 years of age or more.

It is worth noting that the term "toga" is also used in modern times to refer to a loose outer garment worn in public by citizens of ancient Rome, as well as a similar loose wrap or a professional, official, or academic gown.

It is important to mention that the term "TOGA" is also used in aviation to refer to the Take-off/Go Around (TO/GA) mode, which is an autopilot/autothrottle setting activating take-off or go-around thrust.