Tchouaméni made his first-team debut forBordeaux in a 1–0UEFA Europa League away win to Latvian sideVentspils in the second qualifying round on 26 July 2018, starting the match and playing 89 minutes.[8] He scored his first goal of his senior club career on 9 August, netting the final goal in Bordeaux's 3–1 Europa League away victory overMariupol.[9]
On 29 January 2020, Tchouaméni signed a four-and-a-half-year deal withLigue 1 sideMonaco.[10] After almost a year playing for the club, he registered his first league goal, netting the second goal in a 3–1 win againstMarseille on 23 January 2021.[11] On 14 May 2022, he delivered an assist for his captainWissam Ben Yedder and, thus, participated in the ninth win in a row for his side.[12]
On 11 June 2022, it was announced that Tchouaméni would be transferred toLa Liga sideReal Madrid on 1 July 2022, signing a six-year contract with the club.[13][14] The transfer fee was reported to be €80 million, which could rise to €100 million due to additional fees.[15]
He made his official debut for the club on 10 August, coming on as a late substitute in a 2–0 win overEintracht Frankfurt in theUEFA Super Cup to win his first career club trophy.[16] On 30 September 2023, Tchouaméni scored his first goal forLos Blancos, a header in a 3–0 league away win overGirona.[17]
In November 2022, Tchouaméni was named in France's squad for the2022 FIFA World Cup.[21] On 10 December, he scored his first World Cup goal in a 2–1 victory overEngland in the quarter-finals.[22]
^Two appearances in Supercopa de España, one appearance in UEFA Super Cup, one appearance inFIFA Intercontinental Cup, six appearances in FIFA Club World Cup