WThe 2018 World Para Swimming European Championships, known for sponsorship reasons as the 2018 World Para Swimming Allianz European Championships took place in Dublin, Ireland from the 13th to the 19th of August, 2018. It was the 5th edition of the Championships, the first under the new World Para Swimming branding, and the first time Ireland had hosted. Ukraine topped the medal table for the fourth time in a row.
WThe 13th African Swimming Championships were held from 10 to 16 September 2018 at the Mohamed Boudiaf Olympic Complex in Algiers, Algeria and at Boukourdane Lake.
WThe swimming competition at the 2018 Central American and Caribbean Games was held at the Aquatic Complex in Barranquilla, Colombia from 20 to 25 July. Open water swimming events were held on 28 and 29 July at Puerto Velero.
WSwimming at the 2018 Commonwealth Games was held at the Gold Coast Aquatic Centre in the Gold Coast, Australia from 5 to 10 April. A total of 50 events were scheduled. Of the 50, 38 were for able-bodied athletes. The remaining 12 were for para sport athletes.
WThe 2018 European Open Water Swimming Championships was the 17th edition of the European Open Water Swimming Championships and took part from 8-12 August 2018 in Loch Lomond near Glasgow, United Kingdom.
WThe swimming competitions at the 2018 Mediterranean Games in Tarragona took place between 23 and 25 June at the Campclar Aquatic Center.
WThe 2018 Oceania Swimming Championships was held from 25 to 30 June 2018 at the Taurama Aquatic Centre in Port Moresby, Papua New Guinea. It was the twelfth edition of the biennial championships as well as the first to be held in Port Moresby. The tournament featured competition in swimming and open water swimming.
WThe 2018 Pan Pacific Swimming Championships, a long course (50 m) event, was held in Tokyo, Japan, from 9 to 14 August 2018.
WSwimming at the 2018 Summer Youth Olympics was held from 7 to 12 October at the Natatorium in Buenos Aires, Argentina.