A bullfighter (or matador) is a performer in the activity of bullfighting. Torero (Spanish: [toˈɾeɾo]) or toureiro (Portuguese: [toˈɾɐjɾu]), both from Latin taurarius, are the Spanish and Portuguese words for bullfighter and describe all the performers in the activity of bullfighting as practised in Spain, Portugal, Mexico, Peru, France, Colombia, Ecuador, Venezuela and other countries influenced by Portuguese and Spanish culture. The main performer and leader of the entourage in a bullfight, and who finally kills the bull, is addressed as maestro (master), or with the formal title matador de toros (killer of bulls). The other bullfighters in the entourage are called subalternos and their suits are embroidered in silver as opposed to the matador's gold. They include the picadores, rejoneadores, and banderilleros.

Present since the sport's earliest history, the number of women in bullfighting has steadily increased since the late-19 century, both on foot and on horseback. Usually, toreros start fighting younger bulls (novillos or, more informally in some Latin American countries, vaquillas), and are called novilleros. Fighting of mature bulls commences only after a special match, called "the Alternative". At this same bullfight, the novillero (junior bullfighter) is presented to the crowd as a matador de toros.