Martina Stoessel (born 21 March 1997), also known as Tini Stoessel or TINI, is an Argentine actress, model, singer, and dancer who gained international popularity for her debut role as Violetta Castillo on the Disney Channel Latin America original series, Violetta.

Stoessel was born in Buenos Aires and is the daughter of television producer and director Alejandro Stoessel and Mariana Muzlera. She has a brother who is one year older than her named Francisco. Stoessel began her artistic training at a young age studying singing, piano, musical comedy, musical theater, and dance in her native Buenos Aires. Stoessel was educated at two private bilingual schools: Colegio San Marcos and Colegio Martín y Omar de Isidro.

Stoessel resides in San Isidro, Buenos Aires with her parents and brother. She is fluent in Spanish and English.

She was a judge on The Voice Argentina in its second season.