Matilde Mota Veiga Santiago Fidalgo (born 15 May 1994) is a Portuguese professional footballer who plays as a right-back or a centre-back for Famalicão and the Portugal women's national team.

Fidalgo was born in São Domingos de Benfica, Lisbon and from a young age has played football.

[8] Fidalgo moved to S.L Benfica on 4 August 2020, after only making two league appearances and becoming third-choice behind Janine Beckie and even Georgia Stanway, who was not a natural right-back.

On September 26, 2013, Fidalgo debuted for the Portuguese Senior Team in a win against Greece, a 2015 FIFA Women's World Cup qualification's match.

On July 6, 2017, Fidalgo was called by coach Francisco Neto to represent Portugal at the UEFA Women's Euro 2017, the first time the Portuguese team reached the final stage of a big international tournament.