Sebastian Griesbeck (born 3 October 1990) is a German professional footballer who plays as a defensive midfielder for Norwegian club Start.
Griesbeck played for 1. FC Heidenheim in the 2. Bundesliga before moving to Bundesliga club Union Berlin on a free transfer in July 2020.
In June 2023, Griesbeck signed for Eintracht Braunschweig on a one-year contract following two seasons with fellow 2. Bundesliga club Greuter Fürth.
On 15 August 2024, Griesbeck signed with Start in Norway until the end of 2025.
Griesbeck is in a relationship with Kathrin Hendrich.