Sir Daniel Grian Alexander (born 15 May 1972) is a British banker who is vice president for policy and strategy at the Asian Infrastructure Investment Bank. He was a Liberal Democrat politician who was Chief Secretary to the Treasury between 2010 and 2015. He was the Member of Parliament (MP) for the Inverness, Nairn, Badenoch & Strathspey constituency from 2005 until the general election in May 2015, when he was defeated by Drew Hendry of the Scottish National Party (SNP).
In his first parliamentary term (2005–2010), Alexander was the Liberal Democrat spokesperson for Work and Pensions (2007–2008), the Chief of Staff to party leader Nick Clegg, and Chair of the Liberal Democrat Manifesto Group (2007–2010).With the 2010 general election producing a hung parliament, he was one of the four Liberal Democrat MPs, along with Andrew Stunell, Chris Huhne, and David Laws, who were involved in negotiating the coalition agreement for the new coalition government with the Conservative Party. Alexander was initially appointed Secretary of State for Scotland, but at the end of May 2010, he was promoted to Chief Secretary to the Treasury, following the resignation of David Laws.He was knighted in the 2015 Dissolution Honours Lists on 27 August 2015.