Pau Cubarsí Paredes (born 22 January 2007) is a Spanish professional footballer who plays as a centre-back for La Liga club Barcelona and the Spain national team.

[6] Having progressed through the academy, he became the third-youngest Barcelona player to debut in the UEFA Youth League, behind Lamine Yamal and Ilaix Moriba, when he started in an eventual 1–1 draw with Czech side Viktoria Plzeň.

[3][5] On 10 April 2024 Cubarsí has become the youngest defender to start in the quarter finals of the Champions League aged only 17 years and 79 days breaking the previous record held by CSKA Moscow's Georgi Shchennikov.

[16] In March 2024, he was called up to the senior Spain team for the first time by coach Luis de la Fuente, debuting in a 1–0 friendly loss to Colombia.

[17] He came on as a substitute in the 83rd minute replacing Aymeric Laporte, in which he became the youngest defender to ever play for Spain at the age of 17 years one month and 28 days, breaking the record previously held by Sergio Ramos in 2005.