Fernando Manuel Ferreira Fonseca (born 14 March 1997) is a Portuguese professional footballer who plays as a right-back for AVS Futebol SAD.

While at the service of the former's under-19 squad he won two consecutive national championships, under the guidance of former club player António Folha; his contribution was praised by the media, who described an enormous work capacity on the right flank and aggressiveness in ball disputes.

His senior debut arrived on 24 August 2016, in a 2–1 home win against S.C. Olhanense in the Segunda Liga where he played the full 90 minutes.

[4] Fonseca played his first match in the Primeira Liga on 6 May 2017, profiting from the absence of the suspended Maxi Pereira and featuring the entire 1–1 away draw with C.S.

[13] Aged 19, Fonseca was selected by manager Rui Jorge for his 2016 Summer Olympics squad due to Fábio Sturgeon's injury.