Derek Mackay (born 1977) is a Scottish politician who served as the Cabinet Secretary for Finance, Economy and Fair Work from 2016 to 2020. A former member of the Scottish National Party (SNP), he served as the Member of the Scottish Parliament (MSP) for Renfrewshire North and West from 2011 to 2021. Mackay served as a government minister from 2011 to 2020 under the administrations of Alex Salmond and Nicola Sturgeon.