List of Chief Mechanical Engineers of the Great Western Railway
Locomotive Superintendent
Chief Mechanical Engineer
Northern Division Locomotive Superintendent
Mechanical and Electrical Engineer
- Kenneth J Cook
- Robert A Smeddle
Constituent companies
;Birkenhead Railway
;Bristol and Exeter Railway
;Cornwall Minerals Railway
;Llanelly Railway
;Llynvi and Ogmore Railway
;Monmouthshire Railway
- W Craig
- R Laybourne
- H Appleby
;Shrewsbury and Birmingham Railway
;Shrewsbury and Chester Railway
;South Devon Railway;
;Vale of Neath Railway
;West Cornwall Railway
- Skater
- H Appleby
- Joseph Wright
;West Midland Railway
;Newport, Abergavenny and Hereford Railway
;Oxford, Worcester and Wolverhampton Railway
