The 2023–24 Luxembourg Cup, also known as Loterie Nationale Coupe de Luxembourg, for sponsorship reasons, was the 99th year of the football knockout tournament in Luxembourg.
Progrès Niederkorn won the cup on 9 May 2024 (their fifth Luxembourg Cup win), defeating Swift Hesperange 3–1 on penalties after a 1–1 draw.
The eight round of 16 winners entered the quarter-finals.
[3] The four quarter-final winners entered the semi-finals.
[3] The final was held between the two semi-final winners.