The 2023 Sahlen's Six Hours of The Glen was an endurance sports car race sanctioned by the International Motor Sports Association (IMSA). The race was held at Watkins Glen International in Watkins Glen, New York on June 25, 2023. The race was the fifth round of the 2023 IMSA SportsCar Championship, and the third round of the 2023 Michelin Endurance Cup.