2018–19 ISU Challenger Series

The 2018–19 ISU Challenger Series was held from August to December 2018. It was the fifth season that the ISU Challenger Series, a group of senior-level international figure skating competitions, was held.

Competitions
This season, the series included the following events.

Challenger Series rankings
The ISU Challenger Series rankings were formed by combining the two highest final scores of each skater or team.