The New_ World Tour was the sixth concert tour by South Korean band Seventeen. It began on September 13, 2025, in Incheon, South Korea, and concluded at the same venue with two encore shows on April 4 and 5, 2026. The tour was performed by nine members of the group, with Jeonghan, Wonwoo, Hoshi and Woozi all completing their mandatory military services during the tour's duration.

In April 2025, Seventeen announced their fifth studio album Happy Burstday. During the announcement for the album, they also revealed that they would be embarking on a new world tour. The tour was officially announced on July 23, set to start with two nights in Incheon, South Korea, and an announcement for ten shows in Japan came later that day. The promotional poster included only nine members, with Jeonghan and Wonwoo both having begun their enlistment periods prior to the band's Right Here World Tour, and Hoshi and Woozi beginning their services after the duo's Warning Tour. The first two shows will be broadcast live via Weverse. The United States leg was announced on July 28, encompassing nine shows across five cities. Two nights in Hong Kong were announced on July 31. After the conclusion of the US leg, stops were added in Singapore and the Philippines for 2026.

Similarly to previous tours, Seventeen and Pledis held events for fans at various stops to commemorate the concerts. In Seoul, a collaboration with Airbnb was held for accommodation, and the group's choreographer and vocal trainer led classes for fans. In Hong Kong, the events were held under the name "Caratia", after the name of their fan-club, including a drone show at Wan Chai Park.

The following set list is obtained from the September 13 show in Incheon. It is not intended to represent all dates throughout the tour.