Dominic Robert Andrew Johnson, Baron Johnson of Lainston,, is a British financier, hedge fund manager and politician, the co-founder and chief executive officer (CEO) of Somerset Capital Management. He currently serves as a Minister of State in the Department for Business and Trade, having served in the department during the tenure of Liz Truss. Johnson has given more than £250,000 to the Conservative Party, and was its vice-chairman from 2016 to 2019.

The Department for Business and Trade (DBT) is a ministerial department of the Government of the United Kingdom. It was established on 7 February 2023 by a cabinet reshuffle under the Rishi Sunak premiership. The new department absorbed the functions of the former Department for International Trade and some of the functions of the former Department for Business, Energy, and Industrial Strategy.