The I Mexican National Open Championship 1964 was a badminton competition held in November 1964 in Mexico City.
In this competition had participated badminton players from Thailand, Jamaica, the United States and Mexico.
In the men´s singles event, the semi-finalists were Channarong Ratanaseangsuang, Don Paup, Bill W Berry and Antonio Rangel who was the only Mexican badminton player that went through to the semi-finals after defeating the American player Michael Hartgrove (12-15, 15-14 and 15-1). Channarong Ratanaseangsuang won 15-3, 15-5 to Gustavo Hernández, Don Paup beat Oscar Luján 15-6, 18-15, and Bill Berry eliminated Pichai Loaharanu 15-4, 15-6.
In the women´s singles event, Pat Gallagher defeated Lupe Díaz de Bonilla, while Judy Adamos eliminated Lucero Soto.
In the men´s doubles category, the semi-finalists couples were Channarong Ratanaseangsuang - Pichai Loaharanu, Don Paup - Mike Hartgrove, Bill W Berry - Manuel Ordorica y Raúl Rangel - Antonio Rangel.
For the mixed doubles event, the four semi-finalists teams were: Channarong Ratanaseangsuang - Judy Adamos, Don Paup - Pat Gallagher, Antonio Rangel - Carolina Allier y Peter Pichai Loaharanu - Ernestina Rivera.