Portugal competed at the 2017 World Aquatics Championships in Budapest, Hungary from 14 July to 30 July.

Open water swimming

Portugal has entered two open water swimmers

AthleteEventTimeRankAngelica MaríaWomen's 5 km1:01:13.319Women's 10 km2:07:20.435Vânia NevesWomen's 5 km1:01:27.725Women's 10 km2:09:39.041

Swimming

Portuguese swimmers have achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the A-standard entry time, and 1 at the B-standard):

Men AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankGabriel Lopes50 m backstroke26.0538did not advance100 m backstroke55.9930did not advance200 m backstroke2:02.7833did not advanceMiguel Nascimento50 m freestyle22.6936did not advance100 m freestyle49.5633did not advance200 m butterfly1:59.0223did not advanceGuilherme Pina800 m freestyle8:08.9625colspan=2 did not advance1500 m freestyle15:26.1028colspan=2 did not advanceAlexis Santos200 m individual medley1:59.6914 Q1:59.22 NR12did not advance400 m individual medley4:17.3411colspan=2 did not advance

Women AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankDiana Durães200 m freestyle2:01.4826did not advance400 m freestyle4:10.0713colspan=2 did not advance800 m freestyle8:35.1013colspan=2 did not advanceTamila Holub800 m freestyle8:44.85 21colspan=2 did not advance1500 m freestyle16:24.0510colspan=2 did not advanceVictoria Kaminskaya200 m breaststroke2:29.18 20did not advance200 m individual medley2:14.3324did not advance400 m individual medley4:44.9617colspan=2 did not advance

Synchronized swimming

Portugal's synchronized swimming team consisted of 3 athletes (3 female).

Women AthleteEventPreliminariesFinalPointsRankPointsRankMaria GonçalvesCheila VieiraBarbara Costa (R)Duet technical routine71.769433did not advanceDuet free routine70.866737did not advance

Legend: (R) = Reserve Athlete

References