Lucas Romero

Vélez Sársfield

Romero made his debut for Vélez Sársfield in 2012 at 18 years of age, coming on as a substitute in a 0–0 draw with Estudiantes de La Plata. In his first season with the first team, Romero helped Vélez to win the 2012 Inicial championship, playing 13 games (including 4 as a starter replacing injured Francisco Cerro). The midfielder also entered the field in Vélez's victory over Newell's Old Boys for the 2012–13 Superfinal and was a starter in his team's victory over Arsenal de Sarandí for the 2013 Supercopa Argentina. In 2016, Romero was transferred to Cruzeiro Esporte Clube.

Cruzeiro

Independiente

On 5 August 2019, Romero signed with Independiente. He debuted in a 3–0 defeat against Estudiantes de La Plata.

Club León

On 3 January 2023, Romero joined Club León. On 27 November 2023, he suffered a concussion during a match against Santos Laguna, and had to miss the first game of the Liga MX quarterfinals against América.

Romero played with the Argentina national under-20 football team the 2013 South American Youth Championship, in which his team was eliminated in the first round.

As of 15 December 2023

Romero was born and raised in a humble neighborhood in Loma Hermosa, Greater Buenos Aires. He started playing youth football in Vélez Sársfield when he was 7 years old.