The fourth series of Love Island, a British dating reality show, began on 4 June 2018 on ITV2, and concluded on 30 July 2018. It is the fourth from the current revived series, but sixth overall. Caroline Flack presented the series, while Iain Stirling narrated it. The series opener received the highest rating on a digital TV programme since the 2012 Summer Olympics were broadcast on BBC Three; it was also the most watched programme ever on ITV2.