Andrew William Stevenson Marr (born 31 July 1959) is a British journalist, author, broadcaster and presenter. Beginning his career as a political commentator at The Scotsman, he subsequently edited The Independent newspaper from 1996 to 1998 and was political editor of BBC News from 2000 to 2005.

In 2002, Marr took over as host of BBC Radio 4's long-running Start the Week Monday morning discussion programme. He began hosting a political programme—Sunday AM, later called The Andrew Marr Show—on Sunday mornings on BBC One in September 2005.

In 2007, he presented Andrew Marr's History of Modern Britain, a BBC Two documentary series on the political history of post-war Britain, which was followed by a prequel in 2009, Andrew Marr's The Making of Modern Britain, focusing on the period between 1901 and 1945. In September 2012, Marr began presenting Andrew Marr's History of the World, a series examining the history of human civilisation.

After suffering a stroke in January 2013, Andrew Marr spent two months in hospital before returning to his role as presenter of The Andrew Marr Show in September of that year. Marr departed the BBC in December 2021, and in 2022 he launched his own regular programmes on LBC, Tonight with Andrew Marr, and Classic FM. Additionally, he became Political Editor of the New Statesman.

Marr was born in Glasgow, Scotland, on 31 July 1959 to Donald Marr, an investment trust manager, and his wife, Valerie. Regarding his upbringing, he has said: "My family are religious and go to church... [a]nd I went to church as a boy". His father was an elder in the local Church of Scotland, in Longforgan, which Marr grew up in. Marr was educated in Scotland at Craigflower Preparatory School, the independent High School of Dundee; and at Loretto School, also a private school, in Musselburgh, East Lothian, where he was a member of Pinkie House and a prefect. He went to read English at Trinity Hall, Cambridge, graduating with a first class honours degree.

Regarding his political affiliations, he was formerly a Maoist and a member of the Socialist Campaign for a Labour Victory, a left-wing pressure group founded by Labour Party members, now known as the Alliance for Workers' Liberty. His interest in Mao Zedong began as early as age eleven, when he gave fellow Craigflower School students copies of the Little Red Book that he had requested and received from the Chinese embassy. His affinity for Maoism continued into his time at Cambridge, where Marr says he was a "raving leftie" who acquired the nickname "Red Andy".

Marr joined The Scotsman as a trainee and junior business reporter in 1981. In 1984, he moved to London where he became a parliamentary correspondent for the newspaper, and then a political correspondent in 1986. Marr met the political journalist Anthony Bevins, who became his mentor and close friend. Bevins was responsible for Marr's first appointment at The Independent as a member of the newspaper's launch staff, also in 1986.

Marr left shortly afterwards, and joined The Economist, where he contributed to the weekly "Bagehot" political column and ultimately became the magazine's political editor in 1988. Marr has remarked that his time at The Economist "changed me quite a lot" and "made me question a lot of my assumptions".