Rebirth of Mothra 3 (モスラ 3 キングギドラ来襲, Mosura Surī Kingu Gidora Raishū, released in Japan as Mothra 3: Invasion of King Ghidorah) is a 1998 Japanese kaiju film directed by Okihiro Yoneda, written by Masumi Suetani, and produced by Shōgo Tomiyama. Produced and distributed by Toho Studios, it is the final film in the Rebirth of Mothra trilogy, following the previous year's Rebirth of Mothra II.

Rebirth of Mothra III stars Megumi Kobayashi, Misato Tate, Aki Hano, Atsushi Ohnita, and Miyuki Matsuda, and features the giant monster characters Rainbow Mothra and King Ghidorah. The film was released theatrically in Japan on December 12, 1998, and was released in the United States as a Sci-Fi Channel TV premiere on May 31, 2003. However, despite its predecessors being released on DVD in 2000, the film did not receive a North American home media release until 2014, when all three films were released on a Blu-ray bundle by Sony Pictures Home Entertainment.