Sir Nicholas Barton Harvey (born 3 August 1961) is a British Liberal Democrat politician.

Harvey was born in Chandler's Ford, Hampshire, and was educated at Queen's College, an independent school in the county town of Taunton in Somerset.

After the 2001 general election, he became the Liberal Democrat spokesperson for culture, media and sport until he stood down in 2003 to spend more time with his young family.

Until 2009, in addition to his career as an MP, he devoted time to advising a commercial public relations agency, Harrison Cowley, for which he declared an annual income of up to £10,000.

After the 2010 general election, as part of the Liberal Democrat – Conservative coalition, he was made minister for the armed forces.

After leaving Parliament, he was chair of the trustees of the Joseph Rowntree Reform Trust and worked for Global Partners, where he was an adviser on Egypt and Jordan.

[6] In August 2017, he was appointed interim chief executive of the Liberal Democrats, following the resignation of Tim Gordon.