Mexican National Atómicos Championship

Statistics
First champions	Pierroth Jr. and Los Villanos; (Villano III, IV and V)
Final champions	Chessman and Los Psycho Circus (Killer Clown, Psycho Clown and Zombie Clown)
Most reigns	Los Vipers (4); (Histeria, Maniaco, Mosco de la Merced and Psicosis)
Longest reign	The Black Family; (Chessman, Dark Cuervo, Escoria and Dark Ozz); (1,155 days)
Shortest reign	Chessman and Los Psycho Circus (Killer Clown, Psycho Clown and Zombie Clown) (7 days)

Mexican National *Atómicos* Championship
Mexican National Atómicos Championship
	The front plate of the championship belts
Details
Promotion	Asistencia Asesoría y Administración
Date established	August 9, 1996
Date retired	January 24, 2009
First champions
Statistics
First champions	Pierroth Jr. and Los Villanos; (Villano III, IV and V)
Final champions	Chessman and Los Psycho Circus (Killer Clown, Psycho Clown and Zombie Clown)
Most reigns	Los Vipers (4); (Histeria, Maniaco, Mosco de la Merced and Psicosis)
Longest reign	The Black Family; (Chessman, Dark Cuervo, Escoria and Dark Ozz); (1,155 days)
Shortest reign	Chessman and Los Psycho Circus (Killer Clown, Psycho Clown and Zombie Clown) (7 days)

The Mexican National Atómicos Championship (Spanish: Campeonato Nacional Atómicos) was a tag team championship for four-man teams, or Atómicos as they are referred to in Lucha libre. The title is a national championship, controlled by the Mexico City Boxing and Wrestling Commission, which regulates all matches where the title is defended. The championship was created in 1996 and was primarily defended in the Asistencia Asesoría y Administración (AAA) promotion. In early 2009, the reigning champions, Chessman and Los Psycho Circus (Killer Clown, Psycho Clown, and Zombie Clown) were stripped of the title and it was subsequently declared inactive.