The 2023 World Triathlon Championship Series was the 15th season of the World Triathlon Championship Series, the top level international series for triathlon, since its establishment in 2009, and crowned the 35th official World Triathlon Champion for both men and women since the first was crowned in 1989.
The season consisted of seven pairs of triathlon races for both a men's and women's competition, beginning on 3 March 2023 in Abu Dhabi, and concluding on 24 September 2023 with the grand final in Pontevedra. The World Champion is decided on a cumulative points basis, with the sum of their four best points scores, plus their score in Pontevedra, deciding the series rankings, medallists and champions. In addition, a mixed relay only event was held in Paris as a test event for the 2024 Summer Olympics, doubling as a qualifier. Junior, under-23, age-grade and sprint and mixed relay world championships were held at several of the events.
In 2022, the Montreal leg introduced a super-sprint eliminator format, and hosted both the official World Triathlon Mixed Relay Championships and World Triathlon Sprint Championships; which crowned the third World Triathlon Sprint champion for both men and women, and the Mixed Relay champion team. In 2023 these events were moved to the Hamburg leg on 15 and 16 July, although a mixed relay was still held in Montreal. Unlike Hamburg, however, the Hamburg individual triathlon was held over the traditional 'sprint' or half-standard distance rather than the multiple-race eliminator format.
The grand final was held in Pontevedre with increased points and prize money to round off the series.
The 2023 World Triathlon Championship Series visited seven cities.
<nowiki>*</nowiki> The Hamburg event, held in super-sprint eliminator format, doubled as the stand-alone World Triathlon Sprint Championships.
<nowiki>*</nowiki> The Hamburg event, held in super-sprint eliminator format, doubled as the stand-alone World Triathlon Sprint Championships.
The event was held as a leg of the World Triathlon Championship Series in Hamburg, in conjunction with the World Mixed Relay Championships.
Men
Women
Men
Women
Men
Women
Men
Women
<small>(Finals only)</small>
Men
Women
Men
Women
Men
Women
In the individual events, the athlete who accumulates the most points throughout the season is declared the year's world champion.
The following is a list of all the World Championship medalists crowned on the various legs of the World Triathlon Championship series. While the men and women's elite championships were decided over the full series, the Sprint, Mixed Relay, Age-grade, under-23, Junior and Para-triathlon World Championships were all decided by single races, either on the Hamburg leg (junior, sprint and both elite and u-23/Jr mixed relay) or Ponteverde grand final (Under-23 and paratriathlon).
The Grand Final also hosted the World Triathlon Para Championships, a series of single-race championships for paraathletes across 6 classifications, in addition to an open mixed relay event.