Garages in Wales
- Jaxx Autos Swansea, Glamorgan SA6 8PZ
- JC Garage Services Ltd Llanelli, Dyfed SA14 9TD
- Jeff Court Whitland, Carmarthenshire SA34 0QE
- Jenan Motors Swansea, Glamorgan SA5 4DJ
- Jenkins Bros (Bishopston) Ltd Swansea, Glamorgan SA3 3JN
- Jenkins Motors Fishguard, Pembrokeshire SA65 9AD
- Jockey Garage Pontypool, Blaenau Gwent NP4 0JB
- Joff Watkins & Sons Newport, Blaenau Gwent NP11 4QX
- John Barlow Wrexham, Wrexham LL14 3YS
- John Bingham Pontypool, Blaenau Gwent NP4 6TF
- John Clissold Barry, Glamorgan CF63 3RA
- John Davies Burry Port, Carmarthenshire SA16 0BS
- John Dolbear Cardiff, Glamorgan CF14 3AF
- John Dugdale Motor Engineer Ltd Cardiff, Glamorgan CF14 1DG
- John Kajzer-Hughes & Son Ltd Blackwood, Blaenau Gwent NP12 2DL
- John Phillips Newport, Blaenau Gwent NP19 7LW
- John Roberts Wrexham, Wrexham LL12 0PZ
- Jones Cwmbran, Blaenau Gwent NP44 1DZ
- Jones Bros St. Asaph, Denbighshire LL17 0TD
- Jones Bros Llanrwst, Conwy LL26 0HE