Alejandro Daniel "Alex" Pérez Kauffman (born July 1, 1993) is a Mexican-American professional basketball player for Tofaà  of Basketbol Süper Ligi (BSL). He also represents the senior Mexican national basketball team in international competitions.
On June 17, 2016, Pérez signed with the Israeli team Maccabi Haifa for the 2016âÂÂ17 season.
On July 24, 2017, Pérez signed a one-year deal with the Latvian team VEF Rëga. Pérez helped them to reach the 2018 Latvian League Finals and the 2018 VTB League Quarterfinals. In 55 games played during the 2017âÂÂ18 season (both in the Latvian League and the VTB League), Pérez averaged 11.8 points, 5.8 assists, 2.7 rebounds and 1.4 steals per game.
On July 4, 2018, Pérez signed with the Turkish team Banvit for the 2018âÂÂ19 season. He finished the season averaging 14.7 points, 5.6 assists and 2.8 rebounds in the Turkish Basketball Super League, along with 12.8 points, 5.1 assists, 3.4 rebounds and league-high 1.9 steals in the Basketball Champions League.
On July 9, 2019, Pérez signed a three-year deal with Lithuanian club à ½algiris Kaunas.
He signed with Bahçeà Âehir Koleji of the Turkish Basketball Super League on June 26, 2020. In six games, he averaged 8.8 points, 2.7 rebounds, 5.8 assists and 1.0 steal per game.
On November 14, 2020, Perez signed with Fenerbahçe. On June 17, 2021, Pérez officially parted ways with the Turkish club.
On July 4, 2021, he has signed with Türk Telekom of the Turkish Basketball Super League.
On July 21, 2022, he has signed with Konyaspor of the Turkish Basketbol Süper Ligi (BSL).
On August 2, 2023, he signed with ONVO Büyükçekmece of the Basketbol Süper Ligi (BSL).
On June 19, 2024, he signed with Tofaà  of Basketbol Süper Ligi (BSL).
Pérez is a member of the Mexico national basketball team, he participated at the 2017 FIBA AmeriCup.