The 1915 Keighley by-election was a parliamentary by-election held for the UK House of Commons constituency of Keighley in the West Riding of Yorkshire on 29 June 1915.
The by-election was caused by the appointment of the sitting Liberal MP, Stanley Buckmaster as Lord Chancellor and his consequent elevation to the peerage.
Keighley Liberals chose Sir Swire Smith as their candidate. Smith was well known locally in business and public life. He had become a national figure through his promotion of technical education.
There being no other candidates putting themselves forward Smith was returned unopposed.