The 2021 Indonesia Open (officially known as the SimInvest Indonesia Open 2021 for sponsorship reasons) was a badminton tournament that took place at the Bali International Convention Center in Nusa Dua, Badung Regency, Bali, Indonesia, from 23 to 28 November 2021.

The 2021 Indonesia Open was the ninth tournament according to the 2021 BWF World Tour after many tournaments got canceled due to the COVID-19 pandemic earlier of the year.

[1] It was also part of the Indonesia Badminton Festival in which three tournaments; the Indonesia Masters and World Tour Finals, together with this tournament were held at the same venue, played back-to-back.

[1] Below is the point distribution table for each phase of the tournament based on the BWF points system for the BWF World Tour Super 1000 event.

The distribution of the prize money was in accordance with BWF regulations.