Jefferson Ruan Pereira dos Santos (born 30 December 1999), commonly known as Jeffinho, is a Brazilian professional footballer who plays as a winger for Campeonato Brasileiro Série A club Botafogo.

Jeffinho began his career at Resende after playing youth football for Pelé Academia, which had a partnership with the club.

[2] Jeffinho continued to feature sparingly for Resende before moving to Gama on loan for the 2021 Série D. Back to his parent club, he impressed during the 2022 Carioca.

[4] He made his main squad – and Série A – debut on 19 June, replacing Renzo Saravia late into a 3–2 away success over Internacional.

[7] On 28 February 2023, for his first start with Lyon, he scored his first goal, during a quarter-final of the Coupe de France against Grenoble.