Thalia da Silva Costa (born 30 May 1997) is a Brazilian rugby union player.
Her twin sister Thalita Costa also plays rugby sevens for Brazil.
[2] Costa was named in the Brazil squad for the Rugby sevens at the 2020 Summer Olympics.
[3] She represented Brazil at the 2022 Rugby World Cup Sevens in Cape Town, they placed eleventh overall.
[4][citation needed] She will be competing for Brazil at the 2024 Summer Olympics in Paris.