Lucas Ariel Ocampos (Spanish pronunciation: [ˈlukas aˈɾjel oˈkampos]; born 11 July 1994) is an Argentine professional footballer who plays as a winger or forward for Liga MX club Monterrey.

He was awarded his first-team debut by manager Matías Almeyda on 16 August 2011, aged 17, against Chacarita Juniors and scored his first goal for the club in the following match, netting River's opener in a 3–1 win over Independiente Rivadavia.

[4] Ocampos soon established himself as a regular in the starting eleven and was instrumental in River securing the club's promotion back to the Primera División, ending the season with 7 goals to his name in 38 appearances.

The Russian owner completed the big-money signings of James Rodríguez, Radamel Falcao and João Moutinho, amongst others, with the effect that Ocampos found his influence within the Monaco squad diminishing.

[11] Despite featuring more from the bench than from the start, Ocampos still managed a return of 5 goals in 34 appearances as Monaco ended the season as runners-up to mega-money rivals PSG.

[13] Monaco's failure to secure the league title despite heavy investment saw Ranieri sacked at the end of the season and replaced by Leonardo Jardim.

On 3 February 2015, Ocampos signed for Monaco's Ligue 1 rivals Marseille on loan until the end of the season, where he paired up with compatriot and manager, Marcelo Bielsa.

[26][27] Towards the end of January, Genoa and Marseille reached an agreement to allow Ocampos to join fellow Serie A side A.C. Milan for the remainder of his loan spell for a reported fee of €500k.

[32] He featured sporadically for the club, however, and at the end of the season returned to Marseille having played a combined 29 matches and scored 3 goals across all competitions during his stints with Genoa and Milan.

[34] He maintained his form throughout the first half of the season, scoring 6 goals in 15 league appearances by the end of the year, which saw him linked with a move to Torino during the January transfer market.

[41] In his debut season with Sevilla, Ocampos scored 14 goals in La Liga to finish 4th in the table,[42] and eventually won the Europa League.

[51][52] Having previously represented his nation at youth level, Ocampos made his senior Argentina debut on 9 October 2019 during a friendly against Germany, coming on as a half-time substitute for Ángel Correa and scoring a late equalizer in a 2–2 draw.