The 2022–23 Welsh League Cup (known for sponsorship purposes as The Nathaniel MG Cup) was the 31st season of the Welsh League cup competition, which was established in 1992. The reigning champions were Connah's Quay Nomads.

• 44 clubs in the Cymru Premier, Cymru North and Cymru South leagues entered the season's League Cup.
• Caersws and Denbigh Town were awarded the two wildcard spots for the current season.^[1]
• 2 teams from each of the Cymru North and Cymru South received byes into the second round - with those byes decided by being the first two clubs in each section of the competition to be drawn in the first round draw, These clubs joined the 12 clubs of the Cymru Premier plus the winners of the first round ties in the second round.

The draw for the first round was made on 21 June 2022 with matches taking place on the weekend of 23 July. Colwyn Bay and Guilsfield of the Cymru North and Cwmbran Celtic and Ammanford in the Cymru South were drawn as the clubs receiving byes in to the second round^[2]

Southern

Briton Ferry Llansawel (2) v Afan Lido (2)

25 July 2022	Briton Ferry Llansawel (2)	3–2	Afan Lido (2)	Briton Ferry, Wales
19:30 BST	Walters 30', 75' Goldsworthy 90+3'		Edwards 90+2' C. Jones 90+3' (pen.)	Stadium: Old Road Welfare Ground Referee: Richard Harrington

Goytre United (2) v Trefelin BGC (2)

23 July 2022	Goytre United (2)	1–6	Trefelin BGC (2)	Goytre, Wales
14:30 BST	A. Walters 78'		D. Thomas 4', 14' Piper 9', 85' Tomlinson 68' J. Davies 79'	Stadium: Glenhafod Park Stadium Referee: Teifion Cook

Llanelli Town (2) v Abergavenny Town (2)

22 July 2022	Llanelli Town (2)	1–1 (0–2 p)	Abergavenny Town (2)	Llanelli, Wales
19:45 BST	Hopkins 37' (pen.)		Tandy 20'	Stadium: Stebonheath Park Attendance: 202 Referee: George Nemes

Llantwit Major (2) v Carmarthen Town (2)

23 July 2022	Llantwit Major (2)	0–2	Carmarthen Town (2)	Llantwit Major, Wales
14:30 BST		Report	Daley 53' Surman 63'	Stadium: Windmill Ground Referee: Bryn Markham-Jones

Pontardawe Town (2) v Llanidloes Town (2)

23 July 2022	Pontardawe Town (2)	1–2	Llanidloes Town (2)	Pontardawe, Wales
14:30 BST	Reed 63' (pen.)		Reynolds 50' Bird 67'	Stadium: Parc Ynysderw Attendance: 75 Referee: Kim Fisher

Swansea University (2) v Cambrian and Clydach Vale (2)

22 July 2022	Swansea University (2)	3–3 (7–6 p)	Cambrian and Clydach Vale (2)	Swansea, Wales
19:30 BST	Matras 28' (pen.) Morgan 40', 46'	Report	Bull 19' Prosser 35' Smith 69'	Stadium: Sketty Lane Attendance: 112 Referee: Alex McInch

Taffs Well (2) v Ynyshir Albions (2)

22 July 2022	Taffs Well (2)	4–1	Ynyshir Albions (2)	Taff's Well, Wales
19:30 BST	Cann 25' James Allen 42', 45+1' Lyon 55'	Report	Griffiths 45'	Stadium: Rhiw'r Ddar Stadium Attendance: 253 Referee: Kris Hames

The draw for the second round took place on 25 July and was conducted by Cardiff City assistant manager Tom Ramasut. The 12 JD Cymru Premier clubs enter the competition at the second round stage and are joined by Barry Town United and Cefn Druids, who were relegated from the top-flight last season. The second round ties took place over the weekend of 6 August.^[3]

On 28 July 2022, Llandudno, Abergavenny Town and Briton Ferry Llansawel were removed from the Nathaniel MG Cup for rule breaches.^[4]

• Cymru North side Llandudno beat Holyhead 2-1 in the first round, but have been removed after fielding two ineligible players.
• Abergavenny and Briton Ferry have also been removed for rule breaches.
• Afan Lido will advance in place of Briton Ferry, but Abergavenny will not be replaced by Llanelli as they have also been thrown out for a rule breach. Penybont received a bye to the third round.
• Llantwit Major, Mold Alexandra and Prestatyn Town were found proven of breaching the same rule, but those clubs were beaten in the first round.

The draw for the 2022/23 Nathaniel MG Cup third round took place at 8:15pm on Thursday 11 August and was conducted by Sgorio's Mike Davies. Flint Town United, despite losing in the previous round were reinstated due to a competition rule breach by Colwyn Bay. The third round ties took place on 20 and 21 September.^[5]