All Star Junior Festival USA 2023 was an interpromotional professional wrestling event organized by New Japan Pro-Wrestling (NJPW) that aired on NJPW World pay-per-view. It took place on August 19, 2023, at the 2300 Arena in Philadelphia, Pennsylvania. The event was produced by NJPW wrestlers Hiromu Takahashi and Rocky Romero, and featured the participation of junior heavyweight wrestlers representing various promotions from around the world.
On April 16, 2023, New Japan Pro-Wrestling (NJPW) officially announced the All Star Junior USA Festival. The event was produced by NJPW's Hiromu Takahashi and Rocky Romero, and featured junior heavyweight wrestlers from different Japanese and international promotions.
As part of the event's publicity efforts, participants were announced each day throughout the months of July and August by NJPW on Twitter.
The event featured ten professional wrestling matches, which involved different wrestlers from pre-existing scripted feuds, plots, and storylines. Wrestlers portrayed heroes, villains, or less distinguishable characters in scripted events that built tension and culminated in a wrestling match. Storylines were produced on New Japan's television program.
The All Star Jr. Festival USA four-man tournament took place on August 19, 2023.