The fourth season of the American reality competition television series World of Dance premiered on May 26, 2020, on NBC. Ne-Yo, Jennifer Lopez, and Derek Hough returned as the judges for their fourth consecutive seasons. Access Hollywood co-host Scott Evans returned as host for his second season.
The qualifiers were no longer held in the studio; instead, they were recorded in a warehouse with no live audience. In addition, contested were led to believe that the qualifiers were auditions.
The scoring system was abolished in favor of votes; this applied for the qualifiers and duels. Contestants need at least two yeses to proceed to the duels. Judges may also cast a "callback" vote to contestants a final chance to perform again to advance to the duels.
The team divisions were merged within the junior and upper, resulting in only 2 divisions.
In the duels, contestants no longer chose their own opponents. Instead, the judges picked and the contestants only learned of the decision upon entering the room. Additionally, a guest judge picked which contestants performed head-to-head in the redemption duels.
Jennifer Lopez, Ne-Yo, and Derek Hough returned as the judges for their fourth consecutive seasons. Access Live co-host, Scott Evans returned as the host for a second consecutive season.
For the first time in show history there were no guest mentors at any stage of the competition.
The qualifiers started on May 26, 2020. In season 4, the contestants need to get at least 2 yeses to advance to the duels instead of the judges scoring the points to the contestant. Contestants who are given a callback vote are given another chance to perform.
The callbacks occurred on June 23, 2020. The 10 callbacks performed for one of the four spots to head to the duels.
In the duels, contestants no longer chose their own opponents in this season; this was done by the judges and revealed at the last moment. A guest judge selection the competitors for the head-to-head redemption duels.
Oxygen defeated Styles & Emma in the upper redemption duel to advance. The Young Cast defeated James and Harris in the junior redemption duel to advance.
In the semifinals, 6 acts per episode compete for 2 spots in the world final. In each episode, there are 3 upper division and 3 junior division acts.
For the first time, the acts were performed on the World of Dance stage. The scoring system was also returned in this round.
The world final was taped without the studio audience due to the COVID-19 pandemic.