Jesús Vallejo Lázaro (born 5 January 1997) is a Spanish professional footballer who plays as a centre-back for La Liga club Real Madrid.

In 2015, the 18-year-old signed for Real Madrid, being consecutively loaned to Zaragoza, Eintracht Frankfurt, Wolverhampton Wanderers and Granada (twice) and being a reserve player during his spell.

[8] 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.

[16] Profiting from injury to Nacho and suspension to Ramos,[17] Vallejo made his debut in the UEFA Champions League on 11 April 2018, playing the entire 1–3 home loss to Juventus in the second leg of the quarter-finals, which still qualified to the last-four 4–3 on aggregate.

[27] On 24 January 2020, he was loaned to Granada of the Spanish top tier until June;[28][29] on 18 August, the move was extended for another year,[30][31] and he featured 12 times in the Andalusians' quarter-final run in the Europa League[32] for a total of 37 over the campaign.

[33] Due to suspensions and injuries, Vallejo started in the 4–0 home victory over Espanyol on 30 April 2022 as Real Madrid clinched their 35th league title, partnering Casemiro in central defence.

[46][47] Even though he was not part of the squad of 23 for the 2018 FIFA World Cup finals, he was picked by full side head coach Julen Lopetegui for a friendly with Switzerland to be held on 3 June.