Nathaniel Brown is a German left-back born in Amberg on 16 June 2003. He began in local youth football with TSV Kümmersbruck and Jahn Regensburg before joining 1. FC Nürnberg's academy in 2016. Brown signed his first professional contract with Nürnberg in 2022, started senior football with the reserve team in the Regionalliga, and made his 2. Bundesliga debut for the first team in March 2023 against Eintracht Braunschweig. In January 2024 he signed a five-and-a-half-year contract with Eintracht Frankfurt, while remaining on loan at Nürnberg for the rest of the season. Brown then became a Bundesliga player with Frankfurt. He represented Germany at under-21 level, was a runner-up at the 2025 UEFA European Under-21 Championship, and made his senior Germany debut in October 2025.