Played under a regionalised, knock-out format, the 2018–19 competition was the fifth to be held since the tournament was expanded to include clubs from outside the Welsh Premier League.
As well as the 12 Welsh Premier League clubs from the previous season, the top five qualifying clubs from the northern and southern feeder leagues would enter the tournament, along with a number of wildcard entrants.
[1] It was the first time Met had won the cup and the first final appearance for Cambrian, who upset four-time defending champions The New Saints in the semi-finals.
The semi-finalists from the previous season, The New Saints, Cardiff Met, Connah's Quay and Newtown received a bye to the second round.
The match was played on Saturday 19 January 2019 at Jenner Park, Barry and was shown live on S4C.