Eve Sleep Limited, also referred to as "Eve""Eve Sleep" and "Eve Mattress", is a UK-based e-commerce business that sells its mattress online. It was founded in October 2014, in London, UK, and launched to the public in February 2015.

The company was founded by Jas Bagniewski (ex-senior management of Groupon UK and ex-head of Zalando UK), James Fryer (previously of Zen Bedrooms), Kuba Wieczorek (ex director at Channel 4 Creative and head of sports marketing at Channel 4), Joe Moore (formerly at Deloitte), Felix Lobkowicz (ex-VP Rocket Internet and ex-head of Zalando UK) and Abid Ismail (ex-CEO of Axelos, part of Capita Plc, and ex-assistant director at Ernst and Young M&A).