The 2018–19 FAW Welsh Cup was the 132nd season of the annual knockout tournament for competitive football teams in Wales.
First qualifying round
!colspan="3" align="center"|Saturday 8 September
Second qualifying round
!colspan="3" align="center"|Saturday 29 September
First round
!colspan="3" align="center"|20 October
Second round
!colspan="3" align="center"|17 November
Third round
!colspan="3" align="center"|26 January
Fourth round
!colspan="3" align="center"|26 January
Quarter-finals
!colspan="3" align="center"|1 March
!colspan="3" align="center"|2 March
Semi-finals
!colspan="3" align="center"|30 March
!colspan="3" align="center"|31 March
Final
!colspan="3" align="center"|5 May
References