The 2022–23 Luxembourg Cup, also known as Loterie Nationale Coupe de Luxembourg, for sponsorship reasons, was the 98th year of the football knockout tournament in Luxembourg. The cup began on 7 September 2022. The winner of the cup earned a place in the 2023–24 UEFA Europa Conference League.
Racing FC were the defending champions after winning the Luxembourg Cup final in the previous season over F91 Dudelange by the score of 3–2.
The competition was notable for being one of the few top-tier cup competitions that still used the three substitute rule.
Preliminary round
Seven preliminary round matches were played on 7 September 2022.
|}
First round
Thirty-two first round matches were played on 9, 10 and 11 September 2022.
|}
Second round
Thirty-two second round matches were played on 30 September, 1 and 2 October 2022.
|}
Third round
Sixteen third round matches were played on 28, 29 and 30 October 2022.
|}
Fourth round
Eight fourth round matches were played on 12 April 2023.
Quarter-final
Four quarter-final matches were played on 26 April 2023.
Semi-final
Two semi-final matches were played on 10 May 2023.
Final
Streaming
There was partial live coverage of the cup for the third round, with full live coverage from the fourth round onwards, on RTL.