Jonas Gonçalves Oliveira (born 1 April 1984), known as Jonas (Brazilian Portuguese: ), is a Brazilian retired professional footballer who played as a striker. A Brazilian international on twelve occasions, he could also play as an attacking midfielder.
Jonas started his career in Brazil with Guarani, later joining Santos, Grêmio (Bola de Prata in 2010) and Portuguesa before moving to Spanish side Valencia in 2011. Three years later, he joined Benfica in Portugal, collecting several individual awards since, most notably the Primeira Liga Player of the Year (2015, 2016) and the Bola de Prata (2016, 2018). Moreover, collectively, he won four Primeira Liga titles, one Taça de Portugal, two Taça da Liga and two Supertaça Cândido de Oliveira.
Jonas started his senior career at Guarani in 2005. He made his debut against Santo André. While playing for Guarani, Jonas scored 13 goals, 12 of them in 25 league matches.