Benjamín Rollheiser (born 24 March 2000) is an Argentine professional footballer who plays mainly as a right winger for Campeonato Brasileiro Série A club Santos.

Born in Coronel Suárez, Buenos Aires Province, Rollheiser was spotted while playing for local side Independiente de San José at the age of eight by Carlos Bottegal, a coordinator of Estudiantes, and joined the club in early 2010.

[9][10] On 16 July 2019, Rollheiser made his professional debut by coming on as a second-half substitute for fellow youth graduate Julián Alvarez in a Copa Argentina win over Primera B Nacional side Gimnasia y Esgrima de Mendoza; he provided the assist to Exequiel Palacios' opener in the 1–1 draw, and also converted the decisive spot-kick as River won on penalties.

On 20 January 2024, Rollheiser joined Primeira Liga club Benfica on loan until the end of the 2023–24 season, with a subsequent obligation-to-buy, reported to be around €9.5 million for 90% of the player's economic rights.

[22][23] Nine days later, he made his debut for the Lisbon-based side, coming off the bench to replace compatriot Ángel Di María for the final minutes of a 4–1 league victory away at Estrela da Amadora.