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Last month, Djokovic indicated that competing in the tour’s year-end finals was not a priority.
“I am not chasing ATP Finals, I am not chasing the rankings,” Djokovic, who beat the current world number one Jannik Sinner to win last year’s title, told Serbian reporters., external
The former world number one reiterated he wants to focus on the Grand Slams as he looks to prolong his career.
His next tournament is likely to be the Australian Open, which starts on 12 January.
In Melbourne, Djokovic will be aiming for an all-time record 25th major singles title – putting him clear of Australia’s Margaret Court – and a 100th tour-level trophy.
His withdrawal from the ATP Finals means the eight-man field for the Turin tournament is set.
Norway’s Casper Ruud, Australia’s Alex de Minaur and Russia’s Andrey Rublev, who looked set for an exciting battle this week for the final two places, have qualified as a result.
Italy’s Jannik Sinner, Spain’s Carlos Alcaraz, Germany’s Alexander Zverev, Russia’s Daniil Medvedev and Taylor Fritz of the United States had already clinched their spots.
The tournament takes place in the Italian city between 10-17 November.
It will be the first time since 2001 that the event does not feature at least one of Roger Federer, Rafael Nadal and Djokovic.