The 2020–21 Welsh League Cup (known for sponsorship purposes as The Nathaniel MG Cup) was the 29th season of the Welsh League cup competition, which was established in 1992.
The reigning champions were Connah's Quay Nomads.
The competition was suspended in December 2020, before being cancelled in March 2021.
[1] On 31 March 2021, The Football Association of Wales National Cup Board (NCB) decided to cancel the rest of the Nathaniel MG Cup competition for the 2020–21 season.
[1] The decision to cancel the competition was made as the ongoing public health crisis made it impossible to make playing the rest of the competition viable.