Matías Lucas Osadczuk (born 22 April 1997) is an Argentine rugby union player.

Osadczuk tore a knee ligament against Australia at the 2017 Hong Kong Sevens tournament and required surgery before he returned to competitive action at the 2018 Sydney Sevens tournament.

[1] Osadczuk competed for Argentina at the 2022 Rugby World Cup Sevens in Cape Town.

[2][3] He was a member of Argentina's sevens team that competed at the 2024 Summer Olympics in Paris.

This biographical article relating to Argentine rugby union is a stub.