There are four Men in Black movies released to date.

• Men in Black (1997)
• Men in Black II (2002)
• Men in Black 3 (2012)
• Men in Black: International (2019)

If you’re counting the mainline films, that’s four entries in the franchise. If you include other related projects or spin-offs, some sources also discuss related media, but the four above are the primary feature films in the series.