Fantastica Mania 2020 was a professional wrestling show tour, scripted and co-produced by the Japanese New Japan Pro-Wrestling (NJPW) promotion and the Mexican Consejo Mundial de Lucha Libre (CMLL) promotion. The tour started on January 10 and ran until January 21, 2020, with shows taking place in Osaka, Ehime, Kyoto, Aichi, and four shows in Tokyo at Korakuen Hall.

Fantastica Mania, sometimes spelled as Fantasticamania, is a series of annual professional wrestling shows co-promoted by Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) and Japanese New Japan Pro-Wrestling (NJPW), with Revolution Pro Wrestling (RevPro) also co-promoting Fantastica Mania shows in the UK with CMLL. Fantastica Mania is a series of two to seven shows that have taken place in Japan, in January/February of each year since 2011. Since its inception in 2011, 70 Fantastica Mania shows have taken place.