- Bagillt Oil Works
- British Oil Works, Saltney
- Cambrian Oil Works
- Canneline Oil Works
- Coed Talon Oil Works
- Coppa Colliery Oil Works
- Coppa Oil Works
- Coppa Park (Greens) Oil Works
- Dee Oil Works
- Hope Oil Works
- Leeswood Main Oil Works
- Leeswood Vale Oil Works
- Meadow Vale Oil Works
- Mold Valley Oil Works
- North Wales Coal Oil Works
- Oak Pits Oil Works
- Padeswood - Minor Oil Works
- Padeswood Oil Works
- Patent Oil Works
- Plaskynaston Oil Works
- Plas-Ym-Mhowys Oil Works
- Pont-Y-Bodkin Oil Works
- Queensferry Oil Works
- St. David's Oil Works
- Tryddyn Oil Works
- Tryddyn Vale? Oil Works