Diogo Meireles da Costa ComM (born 19 September 1999) is a professional footballer who plays as a goalkeeper for Primeira Liga club Porto and the Portugal national team.

Coming through Porto's youth system, Costa won the UEFA Youth League in 2019. He was promoted from the reserve side to the first-team in 2019, winning a domestic double of the Primeira Liga and the Taca de Portugal in his first season. He broke into the starting line-up in 2021, aged 22, helping Porto to a second domestic double and being named in the Primeira Liga Team of the Year.

Born in Switzerland to parents from Portugal, Costa represented Portugal at various youth levels, being part of the under-17 team that won the 2016 European Championship, the under-19 team that won the 2018 European Championship and the under-21 team that finished as runners-up at the 2021 European Championship. He made his senior international debut in 2021, representing Portugal at the 2022 FIFA World Cup.

CLUB

Porto Youth
UEFA Youth League: 2018–19

Porto
Primeira Liga: 2019–20, 2021–22
Taca de Portugal: 2019–20, 2021–22, 2022-23, 2023-24
Taca da Liga: 2022–23
Supertaca Candido de Oliveira: 2020

INTERNATIONAL

Portugal U17
UEFA European Under-17 Championship: 2016

Portugal U19
UEFA European Under-19 Championship: 2018

INDIVIDUAL

Primeira Liga Goalkeeper of the Month:
September 2021, December 2021, January 2022, February 2022, March 2022, October/November 2022, December/January 2023, February 2023, January 2024

Primeira Liga Goalkeeper of the Season:
2021–22, 2022–23

Primeira Liga Team of the Year:
2021–22, 2022–23

UEFA European Under-17 Championship Team of the Tournament:
2016

UEFA European Under-19 Championship Team of the Tournament:
2017

UEFA European Under-21 Championship Team of the Tournament:
2021

Dragao de Ouro – Newcomer Athlete of the Year:
2018