“I have many good memories, winning seven titles there, and I hope to come back with you next year,” he wrote.
Djokovic did not give a specific reason for his withdrawal.
It is not yet clear whether Djokovic plans to play in the ATP Finals, where he is also a seven-time champion. He is currently sixth in the Race to Turin standings, but could be overtaken by a few players next week in Paris.
The ATP Finals will run from November 10-17 in Turin, Italy.
Djokovic said he plans to attend the Davis Cup in November as a spectator, and has a show scheduled for Juan Martin del Potro in Buenos Aires on December 1st.
