The Social Liberal Forum (often abbreviated to SLF) is an internal pressure group within the British Liberal Democrats that seeks to promote social liberalism within the party. The Social Liberal Forum represents the broad centre-left within the Liberal Democrats. The book 'Reinventing the State: Social Liberalism for the 21st Century' has been said to be influential on the thinking of those who created the SLF.
The SLF was launched in February 2009, after the Liberal Democrat conference voted to use any efficiency savings to extra provide tax cuts for those earning under ten thousand pounds, rather than an increase in government spending. Although the SLF supports the Coalition Government between the Liberal Democrats and the Conservatives, it has campaigned for many changes to Coalition policy on issues such as NHS reforms and cuts to government spending.