Christian Gabriel Oliva Giménez (born 1 June 1996) is a Uruguayan professional footballer who plays as a defensive midfielder for Nacional.

Oliva was born in Delta El Tigre, Ciudad del Plata, San José Department.

[2] In January 2018, after scoring 17 goals for the reserve side, Oliva was promoted to Nacional's first team by manager Alexander Medina, who also worked with him in the B-team.

[2] He made his professional debut late in the month, coming on as a second-half substitute for Luis Aguiar in a 3–1 loss against Peñarol, for the year's Supercopa Uruguaya.

[7] Unused in his first season on Sardinia, he made his debut as a 55th-minute substitute for the injured Luca Cigarini in a 3–1 home win over Genoa,[8] and scored his first goal on 3 November to secure a 2–0 victory at Atalanta.