The medley relay events at the 2023 World Para Swimming Championships were four mixed sex events held at the Manchester Aquatics Centre between 31 July and 6 August.
One was held solely for S14 (intellectual disability) athletes; the other three were held on an aggregate points based system to allow swimmers from multiple classifications to be eligible for a relay, with the lower numbers representing greater levels of impairment.
Three of the events were held over 4 x 100 metres.
One, for the most impaired athletes, was held over 4 x 50 metres.
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