The 2017–18 Biathlon IBU Cup was a multi-race tournament over a season of biathlon, organised by the International Biathlon Union.

IBU Cup is the second-rank competition in biathlon after the Biathlon World Cup.

The season started on 22 November 2017 in Sjusjøen, Norway and ended on 17 March 2018 in Khanty-Mansiysk, Russia.

The defending overall champions from the 2016–17 Biathlon IBU Cup were Alexey Volkov of Russia and Daria Virolaynen of Russia.

Below is the IBU Cup calendar for the 2017–18 season.