Serbia competed at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July.

Artistic swimming

Serbia entered 2 artistic swimmers.

Mixed AthleteEventPreliminariesFinalPointsRankPointsRank Jelena Kontić Ivan Martinović Duet technical routine 169.6216 11 Q 191.1167 9 Duet free routine 143.0189 8 Q 146.5708 6

Open water swimming

Serbia entered 1 open water swimmer.

Men AthleteEventTimeRank Tamás Farkas Men's 5 km 56:53.5 25

Swimming

Serbia entered 5 swimmers.

Men AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRank Andrej Barna 50 metre freestyle 22.52 40 Did not advance 100 metre freestyle 48.20 12 Q 48.43 15 Did not advance Velimir Stjepanović 200 metre freestyle 1:47.93 27 Did not advance 400 metre freestyle 3:54.25 30 colspan=2 Did not advanceVelimir StjepanovićAndrej BarnaNikola AćinUroš Nikolić4 × 100 metre freestyle relay 3:14.36 10 colspan=2 Did not advance

Women AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRank Anja Crevar 200 metre butterfly 2:10.98 16 Q 2:11.65 16 Did not advance 400 metre individual medley 4:46.26 22 colspan=2 Did not advance

Water polo

Summary TeamEventGroup stagePlayoffQuarterfinalSemifinalFinal / OppositionScoreOppositionScoreOppositionScoreRankOppositionScoreOppositionScoreOppositionScoreOppositionScoreRankMen's tournament L 14–16 W 30–5 W 17–15 2 QP W 16–10 W 15–14 L 7–13 L 6–9 4

Men's tournament

Team roster

Group play

Playoffs

Quarterfinals

Semifinals

Third place game

References