The 1999 Guerra de Titanes ("War of the Titans") was the third Guerra de Titanes professional wrestling show promoted by Asistencia Asesoría y Administración (AAA). The show took place on December 10, 1999 in Madero, Mexico. The Main event featured a Luchas de Apuestas "mask vs. mask" under Streetfight rules. Octagón faced Jaque Mate to see which wrestler had to unmask.
The event featured a number of professional wrestling matches with different wrestlers involved in pre-existing scripted feuds or storylines. Wrestlers portray either villains (referred to as Rudos in Mexico) or fan favorites (Técnicos in Mexico) as they compete in wrestling matches with pre-determined outcomes.
- Faby Apache, Alda and Cinthia Moreno defeated Tiffany, Rosy Moreno and Miss Janeth in a Six-man "Lucha Libre rules" tag team match (8:14)
- La Parka, Héctor Garza, El Orientál and Máscara Sagráda defeated El Hijo del Solitario, Abismo Negro, Electroshock, Blue Demon, Jr. in a Eight-man "Atómicos" tag team match (9:58)
- Heavy Metal and Perro Aguayo, Jr. defeated Abidies Irison and Kick Boxer in a Six-man "Lucha Libre rules" tag team match (8:01)
- Los Vatos Locos (Charley Manson, Nygma, May Flowers and Picudo) defeated Los Vipers (Maniaco, Histeria, Psicosis II and Mosco de la Merced) to win the Mexican National Atómicos Championship in an Eight-man "Atómicos" tag team match (12:48)
- El Canek, Dos Caras and El Alebrije defeated Cibernético, Doink "the Clown" and Tiger Steele by disqualification in a Six-man "Lucha Libre rules" tag team match (18:23)
- Octagón defeated Jaque Mate in a Luchas de Apuestas "mask vs. mask" street fight match. As a result, Jaque Mate was forced to unmask (20:34)