Santiago Tomás Giménez (Spanish pronunciation: [sanˈtjaɣo toˈmas xiˈmenes]; born 18 April 2001) is a professional footballer who plays as a forward for Serie A club AC Milan.

Giménez made his full international debut for Mexico in 2021; he represented the country at 2023 CONCACAF Gold Cup, scoring the winning goal in the final.

On 2 August 2017, Giménez made his professional debut with Cruz Azul in a Copa MX group stage match against Tigres UANL in a 1–1 draw.

[8] On 26 June 2022, at the Supercopa de la Liga MX against Atlas, he scored in the match, ending at 2–2 and going into penalties, where he successfully converted his shot as his team won the cup.

[15] Giménez began the 2023–24 season on 4 August in the Johan Cruyff Shield, playing 62 minutes as PSV Eindhoven defeated them 1–0 to win their third consecutive title.

[23] On 25 November, he scored his second hat-trick of the season in a 4–2 Rotterdam derby win over Excelsior at the Stadion Woudestein, ending his six-game goal drought.

[30] On 22 September, Giménez was substituted during the first half of a league match against NAC Breda after sustaining an upper thigh injury, which was later confirmed on the 24th, keeping him out of action for three months.

[31][32] After just two months out injured, he returned on 26 November in the Champions League against Manchester City; with Feyenoord 3–0 down, Giménez scored his team's second goal to inspire a 3–3 comeback away from home.

[32][33] On 12 January 2025, he scored a penalty in a 2–1 loss to Utrecht, becoming Mexico's all-time top scorer in the Eredivisie with 45 goals, surpassing the previous record held by Hirving Lozano.

[34] On 3 February 2025, Giménez signed a four-and-a-half-year contract with Serie A club AC Milan,[35] for a reported transfer fee of €32 million.

Born in Buenos Aires, Argentina, Giménez moved to Mexico at the age of three with his father after he was transferred to Primera División side Veracruz.