Gregory David Clark (born 28 August 1967) is a British politician who served as Secretary of State for Business, Energy and Industrial Strategy from 2016 to 2019. He also was Secretary of State for Communities and Local Government from 2015 to 2016 and Secretary of State for Levelling Up, Housing and Communities from July to September 2022. Later, he was the Chair of the Science, Innovation and Technology Select Committee. A member of the Conservative Party, he served as Member of Parliament (MP) for Tunbridge Wells from 2005 until 2024.

Clark was born in Middlesbrough and studied Economics at Magdalene College, Cambridge, where he was president of Cambridge University Social Democrats. He then gained his PhD from the London School of Economics. Clark worked as a business consultant before becoming the BBC's Controller for Commercial Policy and then Director of Policy for the Conservative Party under Conservative leaders Iain Duncan Smith and Michael Howard from 2001 until his election to parliament in 2005.

Clark served in the Cameron-Clegg coalition as Minister of State in the Department for Communities and Local Government from 2010 to 2012, Financial Secretary to the Treasury from 2012 to 2013, and Minister of State for Cities and Constitution at the Cabinet Office from 2013 to 2014. Between July 2014 and May 2015, he held the post of Minister for Universities, Science and Cities. Following the 2015 general election, Prime Minister David Cameron promoted Clark to the Cabinet as Secretary of State for Communities and Local Government. In July 2016, he was appointed as Secretary of State for Business, Energy and Industrial Strategy by new Prime Minister Theresa May and remained in that role until 24 July 2019. He had the whip removed on 3 September 2019, for voting against the government, before it was restored on 29 October. In May 2022, he was named as the Prime Minister’s trade envoy to Japan by Boris Johnson. He ceased to be an MP in May 2024, when Parliament was dissolved for the 2024 general election, in which he decided not to stand.

Gregory Clark was born in Middlesbrough on 28 August 1967 and attended St Peter's Roman Catholic School in South Bank. His father and grandfather were milkmen running the family business, John Clark and Sons, while his mother worked at Sainsbury's.

Clark read Economics at Magdalene College, Cambridge. He joined the Social Democratic Party (SDP) while at Cambridge and was an executive member of its national student wing, Social Democrat Youth and Students (SDYS) and, in 1987, president of Cambridge University Social Democrats. He then studied at the London School of Economics, where he was awarded his PhD in 1992 with a thesis entitled, The effectiveness of incentive payment systems: an empirical test of individualism as a boundary condition.

After leaving university, Clark first worked as a business consultant for Boston Consulting Group, before becoming special advisor to the Secretary of State for Trade and Industry, Ian Lang, between 1996 and 1997. Subsequently, he was appointed the BBC's Controller, Commercial Policy, and was Director of Policy for the Conservative Party from 2001 until his election to parliament in May 2005.

Between 2002 and 2005, he was a councillor on Westminster City Council, representing Warwick ward and serving as Cabinet Member for Leisure and Lifelong Learning.

Clark was selected as the Conservative prospective parliamentary candidate for Tunbridge Wells in December 2004. At the 2005 general election, Clark was elected as MP for Tunbridge Wells with 49.6% of the vote and a majority of 9,988.