The Government Internal Audit Agency (GIAA) is an executive agency of the government of the United Kingdom, sponsored by HM Treasury.^[1] It was established in April 2015, following the earlier publication of the Treasury's 2013 Financial Management Review.^[2]

The Government Internal Audit Agency is intended to help government departments to manage public money effectively by developing better governance, risk management and internal controls. As of 2024^[update] the GIAA employs around 500 people in 40 locations across the UK. Its customers include 15 government departments and over 130 associated government bodies.^{[citation needed]}