The Romani, also spelled Romany or Rromani (ˈroʊməni or ˈrɒməni ), colloquially known as the Roma (: Rom), are an Indo-Aryan ethnic group who traditionally lived a nomadic, itinerant lifestyle. Linguistic and genetic evidence suggests that the Romani originated in the Indian subcontinent; in particular, the region of present-day Rajasthan. Their subsequent westward migration, possibly in waves, is now believed by historians to have occurred around 1000 CE. Their original name is from the Sanskrit word डोम (doma) and means a member of a Dalit caste of travelling musicians and dancers. The Roma population moved west into the Persian Ghaznavid Empire and later into the Byzantine Empire. The Roma arrived in Europe around the 13th to 14th century. Although they are dispersed, their most concentrated populations are located in Europe, especially central, eastern, and southern Europe (notably southern France), as well as western Asia (mainly in Turkey and Iran).
In the English language, the Romani are widely known by the exonym Gypsies (or Gipsies), which is considered a pejorative by some Romani due to its connotations of illegality and irregularity as well as its historical use as a racial slur. In the United Kingdom, the term Gypsies is preferred by some of the English and Welsh Romanies, and is used to refer to them in official documentation. The attendees of the first World Romani Congress in 1971 unanimously voted to reject the use of all exonyms for the Romani, including Gypsy.
Since the 19th century, some Romani have also migrated to the Americas. There are an estimated one million Roma in the United States and 800,000 in Brazil, most of whose ancestors emigrated in the 19th century from eastern Europe. Brazil also includes a notable Romani community descended from deportees from the Portuguese Empire during the Portuguese Inquisition. In migrations since the late 19th century, Romani have also moved to other countries in South America and Canada. Though often confused with Irish Travellers and the Yenish people in western Europe, the Romani are culturally different.