The seventeenth season of South African Idols premiered on 11 July 2021 and concluded on 21 November 2021 on the Mzansi Magic television network. The season was won by Berry Trytsman and the runner-up was Karabo Mathe.
The season saw judge Somizi Mhlongo being asked to "take time off" from the show to deal with domestic abuse allegations against him. This resulted in him only appearing in the first few pre-recorded episodes and none of the live ones. He was replaced by a guest judge each week for the rest of the season.
After 17 and 11 years as judges respectively, it was announced shortly before the start of the eighteenth season that Randall Abrahams and Unathi Nkayi would not be returning to the show.
This round saw contestants perform hit songs by five DJs: DJ Cleo, Prince Kaybee, Sun-El Musician, De Mthuda and DJ Sumbody.
Ithana Conjwa withdrew from the competition for health reasons a day before performing in the non-elimination round broadcast on 12 September. This meant that the top 10 round immediately became the top 9 round.
On 11 October, it was announced that there would be no elimination that week, and would resume the following week. All seven contestants went on to perform their prepared showstopper songs.