The 1890–91 Welsh Amateur Cup was the first season of the Welsh Amateur Cup. The cup was won by Wrexham Victoria who defeated Flint Town 4–1 in the final.
First round Home teamResultAway teamRemarksBerse Rovers5-3BuckleyBrymbo Institute Reserves1-3Broughton St PaulsWestminster Rovers Reserves0-2Llay Hall Blue StarsMinera Rovers4-8Rhostyllen ReservesWrexham Gymnasium3-2Wrexham ReservesOrdered to ReplayWrexham Victoria18-0Gwenfro Red StarsMancott & Pentre United4-2Llandudno SwiftsMold Reserves0-4FlintMold Red Stars4-4Rhyl Victoria CrossHolywell ReservesByeRhos Reserves3-4Rhos St Johns Malpas1-4Chirk Reserves Oswestry Reserves8-1Penycae Wanderers
Replay Home teamResultAway teamRemarksRhyl Victoria Cross1-0Mold Red StarsWrexham Reserves3-1Wrexham Gymnasium
Second round Home teamResultAway teamRemarksBroughton St Pauls3-1Berse RoversPlayed on the ground of Brymbo InstituteLlay Hall Blue StarsByeWrexham Victoria2-1Rhostyllen ReservesWrexham ReservesByeRhyl Victoria Cross3-4Mancott & Pentre UnitedFlint3-2Holywell Reserves Oswestry Reserves0-3Chirk ReservesRhos St JohnsBye
Third round Home teamResultAway teamRemarksLlay Hall Blue Stars5-3Broughton St PaulsWrexham Reserves3-5Wrexham VictoriaMancott & Pentre United1-2FlintRhos St Johns0-7Chirk Reserves
Semi-final ScoreVenueCrowdFlint Town3-0Llay Hall Blue StarsThe Racecourse Ground, Wrexham1,000Wrexham Victoria3-2Chirk Reserves
Final WinnerScoreRunner-upVenueCrowdWrexham Victoria4-1Flint TownThe Racecourse Ground, Wrexham1,500
References