Javier Manquillo Gaitán (Spanish pronunciation: ; born 5 May 1994) is a Spanish professional footballer who plays as a right back for English club Newcastle United.
Born in Madrid, Manquillo started playing football with hometown's Real Madrid alongside his twin brother Víctor, a forward. However, in mid-2007, the club decided to release the latter and the former followed suit, with both signing for neighbouring Atlético Madrid 48 hours later. In November 2011 he made his unofficial debut with first team, playing in a friendly game against Zamalek SC; late into the month, he extended his contract until 2016.
On 8 December 2011, Manquillo made his official debut for the Colchoneros, starting in a 1–2 away loss against Albacete Balompié in the Copa del Rey (1–3 on aggregate). He was subsequently an unused substitute in the matches against Real Sociedad and Málaga CF, whilst finishing the season in Segunda División B with 13 appearances for the B-side.