Jesús Vallejo Lázaro (Spanish pronunciation: ; born 5 January 1997) is a Spanish professional footballer who plays for Real Madrid as a central defender.
Born in Zaragoza, Aragon, Vallejo joined Real Zaragoza's youth setup in 2007, aged 10. On 26 July 2013, after impressing in the Juvenil squad, he signed a new deal with the club.
On 23 August 2014, before even having appeared for the B-side, Vallejo made his professional debut, starting in a 0–0 draw at Recreativo de Huelva for the Segunda División championship. On 26 December he further extended his link, until 2019.
Vallejo scored his first professional goal on 5 April, netting the last in a 1–1 away draw against CD Tenerife. In the same match he was appointed team captain by manager Ranko Popović, and remained with the role afterwards.
On 31 July 2015, Vallejo signed a six-year contract with Real Madrid for a rumoured €6 million fee, being immediately loaned back to Zaragoza for one year.
Vallejo moved abroad for the first time in his career on 12 July 2016, after agreeing to a one-year loan deal with Bundesliga club Eintracht Frankfurt.
On 7 July 2017, Vallejo was unveiled as a Real Madrid player and member of the first team squad for the upcoming season. He was handed the number 3 shirt.