Lautaro Daniel Giannetti (born 13 November 1993) is an Argentine professional footballer who plays as a centre-back for Serie A club Udinese.

Giannetti debuted professionally for Vélez Sarsfield in the 2012 Clausura under Ricardo Gareca's coaching, starting in a 0–2 defeat to Argentinos Juniors.

[2] He scored his first professional goal in the 12th fixture of the 2016 Argentine Primera División, a last-minute winner against Argentinos Juniors.

[4] Giannetti was part of the squad of the Argentina national under-20 football team that played the 2013 South American Youth Championship.

In 2016, the defender was selected by coach Gerardo Martino for the preliminary squad of the Argentina national under-23 football team to participate in the Summer Olympics.