Luka Romero

Mallorca

Romero was called up to train with the main squad of Mallorca by manager Vicente Moreno on 5 June 2020. Eleven days later, he was included in the list for a La Liga match against Villarreal after being given special authorization at the age of 15 years and 221 days, but remained an unused substitute in the 1–0 away loss. Romero played his first match with Mallorca on 24 June, replacing Iddrisu Baba late into a 0–2 away defeat against Real Madrid. Aged 15 years and 219 days, he broke Sansón's record for the youngest player to ever play a professional match in La Liga. He also broke the age record for the five top European leagues which was held by Kalman Gerencseri since 1960. Romero started the 2020–21 campaign with the main squad, but also appeared with the reserves in Tercera División on some occasions. He scored his first senior goals on 1 November, netting a brace with the B-side in a 3–0 away win against Llosetense. Romero scored his first professional goal on 29 November, netting the fourth in a 4–0 Segunda División home routing of Logroñés.

Lazio

On 19 August 2021, Romero was signed by Serie A club Lazio. On the opening day of the 2021–22 season, he became Lazio's youngest ever player when he made his debut at the age of 16 years, 9 months and 10 days in their 6–1 victory over Spezia. On 17 October, Romero was included in The Guardian's 60 best young talents in world football born in 2004. He scored his first goal for Lazio on 10 November…

Born in Mexico to an Argentine family, he moved to Spain at a young age. Romero holds all three passports, and is currently eligible to represent all three senior national teams. He represented Argentina internationally at under-15 level in the 2019 South American U-15 Championship, where they finished runners-up, scoring two goals in six matches. In March 2020, Romero was called up to represent Argentina's under-17s at the Montaigu Tournament, but the competition was cancelled due to the COVID-19 pandemic. Romero received his first-ever call up to Argentina's senior team by manager Lionel Scaloni in March 2022. On 26 March 2022, Romero played for the under-20 team in a 2–2 draw against the United States U20s. On 3 May 2023, Romero was included in the Argentina U20 squad that took part in the 2023 FIFA U-20 World Cup, which took place in Argentina. They were knocked out in the round of 16 by Nigeria U20.

Native to Victoria de Durango, Mexico, to Argentine parents, Romero moved to Villanueva de Córdoba, Andalusia, Spain, at the age of three. He moved to Formentera, Balearic Islands at the age of seven, and started to play at Ibiza-based Sant Jordi. In 2011, Romero had a trial with Barcelona, but could not sign as he was under the age of 10 and did not live in the area. In 2015, at the age of ten, he signed an eight-year youth contract with Mallorca. In his first four years, Romero scored 230 goals in 108 matches.

Romero's father, Diego, was a professional footballer. His twin brother Tobías is also a footballer, and plays as a goalkeeper.