Godzilla vs. Megalon (ゴジラ対メガロ, Gojira tai Megaro) is a 1973 Japanese kaiju film directed by Jun Fukuda, written by Fukuda and Shinichi Sekizawa, and produced by Tomoyuki Tanaka, with special effects by Teruyoshi Nakano. Produced and distributed by Toho Studios, it is the 13th film in the Godzilla franchise, and features the fictional monster characters Godzilla, Megalon, and Gigan, along with the mecha character Jet Jaguar.