Martim Moreira Moutinho Fernandes (born 18 January 2006) is a Portuguese professional footballer who plays as a right-back for Porto.
Club career Fernandes is a product of the youth academy of Valonguense, before moving to Porto in 2017. On 18 January 2022, he signed his first professional contract with Porto, originally assigned to their reserves. He made his senior and professional debut with Porto B in a 1–0 Liga Portugal 2 loss to Sporting Covilhã in May 2022, and at 16 years and six months old was their youngest ever debutant in the division. In August 2022, he was formally promoted to Porto's reserves. On 28 September 2023, he was named Porto's Young Athlete of the Year. In October 2023, he was named to The Guardian: Next Generation 2023 list of outstanding talents.
On 20 October 2023, Fernandes made his debut for Porto's main team, coming off the bench to replace João Mário on the second half of a 2–0 away victory over Vilar de Perdizes, in the 3rd round of the Taça de Portugal.
With starting right-back João Mário being injured, Fernandes was surprisingly picked by manager Sérgio Conceição to replace Mário in an important match against their rivals Sporting CP, on 29 April. At the match, 18-year-old Fernandes made first-team debut at right-back, and in 4th minute, he went on long run forward, stepped inside Morten Hjulmand who slipped over, and assisted Pepê for Porto's second goal in a 2–2 home draw against Sporting. His promising debut, led him to start Porto's remaining league matches of the season, with the exception of the Taça de Portugal final on May 26, which Porto following a 2–1 defeat of Sporting.
