Kaylin Swart represented the South Africa National Team at the 2023 FIFA Women's World Cup hosted in Australia and New Zeland. Across 4 matches, Kaylin started and added 15 saves against Sweden, Argentina, Italy, and the Netherlands. In their 3-2 win against Italy, Kaylin had an 85.7% save percentage with 7 shots on goal and 5 saves. This was South Africa's second appearance in a FIFA World Cup and they advanced to the Round of 16, which is the same distance the United States advanced to.