Francisco Nahuel Tetaz Chaparro (born 11 June 1989) is an Argentine professional rugby union player who plays as a prop for United Rugby Championship club Benetton and the Argentina national team.

[1][2] A prop forward, he began his career with Bigua Rugby Club (Mar del Plata) and La Plata.

Member of Pumas from 2010, Chaparro was a starter for the Argentina national team on 14 November 2020 in their first ever win against the All Blacks.

[4] Chaparro was named in Argentina's squad for the 2015 Rugby World Cup but then had to withdraw through injury and was replaced by Juan Figallo.

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