|Headquarters||Warwick, United Kingdom|
|Area served||United Kingdom|
|Products||Gas & Electricity|
First Utility is a supplier of gas and electricity in the United Kingdom, based in Warwick. Despite having a market share of less than 1%, in October 2013 the company was ranked as the seventh largest supplier in the UK, making it the largest outside the Big 6.
Unlike the Big 6, the company does not generate electricity, instead purchasing it from international markets. The company has a relationship with Shell, which sees it act as an intermediary to purchase wholesale energy on the global market. 
The company was launched in 2008 by co-founders Mark Daeche, Darren Braham and Marcus Citron as a spin-out from First Telecom. In January 2012 the company appointed the former lastminute.com CEO Ian McCaig as its new CEO.
- First utility boss: bills could double in the next 10 years The Telegraph, 19 October 2013
- "Fast Track 100 - First Utility". Fast Track. Retrieved 28 March 2012.
- "Energy minnow seeks big name". London: The Independent. 13 February 2012. Retrieved 28 March 2012.
- Super League agrees new three-year sponsorship deal BBC Sport, 21 January 2014
- "UK's First Utility eyes IPO to fund expansion" (Press release). Reuters. 7 September 2014.