NKOTBSB is a compilation album by American supergroup NKOTBSB, which consists of New Kids on the Block and Backstreet Boys. The album was released on May 24, 2011, and features five hits from each group, two new joint recordings "All in My Head" and "Don't Turn Out the Lights", as well as a mash up. The album debuted at number seven in the US, selling 40,000 in the first week of its release. The album coincides with the joint tour featuring the groups, starting at the Allstate Arena in Rosemont, Illinois on May 25, 2011. The album was granted a Silver certification in UK.

The NKOTBSB Tour was a co-headlining concert tour between American boy bands New Kids on the Block and the Backstreet Boys, who together formed NKOTBSB. The tour visited North America in 2011. Europe, Australia and Asia were added to the itinerary for 2012. The tour ranked 44th in Pollstar's "Top 50 Worldwide Tour (Mid-Year)", earning over 10 million dollars. At the conclusion of 2011, the tour placed 8th on Billboard's annual "Top 25 Tours", earning over $76 million with 51 shows.