The Ratlam Lok Sabha constituency by-election of 2015 was caused by the death from brain haemorrhage and myocardial infarction of the sitting Member of Parliament, Dileep Singh Bhuria of the Bharatiya Janata Party (BJP). The by-election was won by Kantilal Bhuria of the Indian National Congress (INC) by 88,800 votes. The elections were held on 21 November 2015 and the result was declared on 24 November. Voter turnout was 62.46 per cent.