The Daily Mirror is a British newspaper, launched on 2 November 1903 by Alfred Harmsworth (later Lord Northcliffe) as a newspaper for women, run by women. In 1904 changed it to a pictorial as unsuccessful and called The Daily Illustrated Mirror. This name ran from 26 January to 27 April 1904. Originally aimed at a middle class readership, in 1934 a decision was taken to increase sales by appealing to working class readers. Based in London, in 1955 the paper also began to produce a Northern edition from Manchester. By 1960 The Daily Mirror was Britain's best-selling tabloid newspaper. It was overtaken by The Sun in 1978.

The Daily Mirror was sold to Robert Maxwell in 1984, and produced its first colour edition in 1988. The 1990s were a difficult decade for the paper, which underwent large-scale restructuring. In 1999 The Daily Mirror merged with regional newspaper group Trinity to become Trinity Mirror. Printing was moved to facilities in Oldham and Watford. In common with other tabloid papers, The Daily Mirror saw sales fall in the early 2000s. In 2012 the paper merged with its sister title, The Sunday Mirror.