The 1908–09 Welsh Amateur Cup was the nineteenth season of the Welsh Amateur Cup. The cup was won by Carnarvon United who defeated Oak Alyn Rovers 5–1 in the final at Colwyn Bay.

Preliminary round

Home team	Result	Away team	Remarks
Colwyn Bay	4-2[1]	Llanrwst
Ruthin Town		Denbigh Town
Buckley Rangers		Greenfield
Brymbo Institute		Coedpoeth St. David's
Coedpoeth United		Southsea United
Ruabon		Cefn Albion
Weston Rhyn		Rhos Rangers
Druids Reserves	3-1[2]	Chirk Reserves
Johnstown Amateurs		Acrefair United
Bala Press	2-0[3]	Towyn Rovers
Llanidloes United	10-2[3]	Welshpool Reserves
Oswestry United Reserves	2-0[3]	Royal Welsh Warehouse
Montgomery		Newtown North End

^[4][5]

First round

Home team	Result	Away team	Remarks
Beaumaris	0-3	Carnarvon United
DenbighTown		Rhyl Reserves
Colwyn Bay		Llandudno Amateurs
Burntwood United	1-3[6]	Buckley Rangers
Aston Hall		Connah's Quay Victoria
Coedpoeth United		Brynteg White Stars
Summerhill		Brymbo Institute
Rhos Rangers		Johnstown Amateurs
Druids Reserves	0-0[6]	Cefn Albion
Barmouth Rovers		Pwllheli
Bala Press		Porthmadog
Llanfyllin		Oswestry United Reserves
Newtown North End		Llanidloes United
Llandrindod Wells		Builth Wells
Conwy	Bye
Llanfaes Brigade (Brecon)

^[7][8]

Second round

^[11][12][13]

Third round

Home team	Result	Away team	Remarks
Carnarvon United	3-1	Bangor Reserves
Holyhead Swifts	2-2	Llandudno Amateurs
Llandudno Amateurs	2-0[14]	Holyhead Swifts	Replay
Summerhill	2-0	Brymbo Victoria
Buckley Rangers	4-1	Esclusham White Stars
Oak Alyn Rovers	4-1	Buckley Engineers
Rhos Rangers	1-1	Bala Press
Bala Press	0-2[15]	Rhos Rangers	Replay
Llanfres Brigade (Brecon)	0-0	Llanidloes United
Llanidloes United	4-1[16]	Llanfres Brigade (Brecon)	Replay
Aberystwyth	1-0	Shrewsbury Rovers

^[17][18]

Fourth round

^[22]

Semi-final

	Result		Venue
Aberystwyth	1-1[23]	Carnarvon United	Towyn
Carnarvon United	2-1[24] (Replay)	Aberystwyth	Porthmadog
Rhos Rangers	1-3[25]	Oak Alyn Rovers	Sealand Road, Chester[26]

^[27]

Final

Carnarvon United

Oak Alyn Rovers

^[28][29]

References