The Eastbourne Open is a tennis tournament on the WTA Tour and the ATP Tour held at the Devonshire Park Lawn Tennis Club, Eastbourne, United Kingdom. Held since 1974, it is classified as an ATP Tour 250 series on the ATP Tour and a WTA 250 series on the WTA Tour. The tournament is played on outdoor grass courts, and is generally considered a "warm-up" for the Wimbledon Championships, a major tournament, which begins the following week. It was originally just part of the WTA Tour, but from 2009 it was combined as an ATP Tour event. It replaced the Nottingham Open grass court tournament from 2009–2014. Nottingham returned for 2015–2016 with no men's event in Eastbourne, however Eastbourne replaced the Nottingham event again from 2017 onwards. From 2022 until 2024, it was sponsored by Rothesay, with past sponsors including Viking Cruises, Nature Valley and AEGON.