Costa Rica is set to compete at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July.

Artistic swimming

Costa Rica entered 8 artistic swimmers.

Women AthleteEventPreliminariesFinalPointsRankPointsRank María Alfaro Solo technical routine 148.2166 29 Did not advance Anna Mitinian Solo free routine 96.0500 29 Did not advance Andrea Maroto Raquel Zúñiga Duet technical routine 159.2233 33 Did not advance María Alfaro Anna Mitinian Duet free routine 99.5604 35 Did not advance

Mixed AthleteEventPreliminariesFinalPointsRankPointsRank Jimena Solano Anna Mitinian Raquel Zúñiga María Alfaro Mariela Jenkins Andrea Maroto Alexa Alpízar María Paz Castro Team technical routine 162.0811 20Did not advance Team free routine 134.3000 18Did not advance

Open water swimming

Costa Rica entered 2 open water swimmers.

Men AthleteEventTimeRank Jeison Rojas Men's 5 km 1:01:28.3 53 Men's 10 km 2:04:33.1 50

Women AthleteEventTimeRank Kisha Jiménez Women's 5 km Women's 10 km

Swimming

Costa Rica entered 2 swimmers.

Men AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRank Alberto Vega 200 metre freestyle 1:55.07 51Did not advance 400 metre freestyle 4:05.18 41 colspan="2" Did not advance

Women AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRank Alondra Ortiz 200 metre butterfly2:16.9527Did not advance 200 metre individual medley 2:19.91 31 Did not advance

References