Justus Hollatz (born 21 April 2001) is a German professional basketball player for Anadolu Efes of the Turkish Basketball Super League and the EuroLeague, on loan from Cedevita Olimpija. He plays the point guard position.
Hollatz was born on 21 April 2001, in the Langenbek district of Hamburg. His basketball journey began through a working group at the Marmstorf elementary school, where he played with his two older brothers Joshua and Jacob on the youth team of BG Harburg Hittfeld. He also played football, and auditioned for the youth team of FC St. Pauli. However, the club was far from his parents' home, which prevented him from taking the opportunity to move to St. Pauli. Since he preferred basketball, Hollatz ultimately gave up football.
In November 2015, Hollatz made his debut with the youth team of Harburg Hittfeld. Prior to the 2017–18 season, Hollatz moved to club SC Rist Wedel.
For the 2018–19 season, Hollatz transferred to his hometown club Hamburg Towers, where he eventually helped lift them to a title. After the championship winning season, Hollatz signed a three-year contract with Hamburg in May 2019.
Three years later, Hollatz moved to Spanish club Breogán, for the 2022–23 season. During his lone season with the team he averaged 7.9 points, 2.1 rebounds and 3.3 assists per game. In June 2023, Hollatz signed with Cedevita Olimpija for the 2023–24 season. However, he was loaned for the season to Anadolu Efes.
In February 2021, Hollatz made his debut with the senior Germany national team, in a EuroBasket 2022 qualifier against Great Britain. In September 2022, Hollatz was one of the members who helped Germany win bronze at EuroBasket 2022, where he averaged 1.3 points and 2.8 assists per game. The following year, Hollatz helped Germany win the 2023 FIBA World Cup, averaging 2 points and 1 assist per game during the competition.