Julia Mary Langdon (born July 1946) is a British journalist and writer.

A political journalist since 1971, she became a lobby correspondent in 1974.^[1] Leaving The Guardian in 1984, she was appointed political editor of the Daily Mirror, the first woman to hold the position on a national newspaper in the UK.^[2] Later, Langdon was political editor of The Sunday Telegraph.^[3] Having children, however, was one of the reasons she left the parliamentary lobby in the 1990s.^[4]

Langdon has been a freelance writer since 1992, and has written a biography of the Labour politician Mo Mowlam (2000) and is writing a biography of former Prime Minister Gordon Brown. She has also worked as a broadcaster for the BBC. She presented a programme on BBC Radio 4 about the recruitment of female spies, which featured an interview with Eliza Manningham-Buller former head of The Security Service. In the programme Langdon revealed that she had been approached at school to work for the secret services.^[5]