John Aspinall (engineer)

John Aspinall
Aspinall by George Hall Neale, c. 1920
Born25 August 1851
Died19 January 1937(1937-01-19) (aged 85)
Engineering career
DisciplineCivil, Mechanical
InstitutionsInstitution of Civil Engineers (president), Institution of Mechanical Engineers (president)

Sir John Audley Frederick Aspinall (25 August 1851 19 January 1937) was an English mechanical engineer who served as Locomotive Superintendent of the Great Southern and Western Railway (GS&WR) of Ireland and Lancashire and Yorkshire Railway (L&YR) of England. He introduced vacuum brakes to his locomotives in Ireland, a trend which was followed in Britain, and designed several locomotives. He was also president of the Institution of Mechanical Engineers and of the Institution of Civil Engineers.