Don't Ever Open That Door (Spanish:No abras nunca esa puerta) is a 1952 Argentine thriller film of the classical era directed by Carlos Hugo Christensen and starring Ángel Magana, Roberto Escalada and Norma Giménez. It is a film noir anthology film based on two short stories by Cornell Woolrich, namely "Somebody on the Phone" and "Humming Bird Comes Home".

The film's sets were designed by the art director Gori Muñoz.

It was included in the 2022 list of The 100 Greatest Films of Argentine Cinema at number 45, a poll organized by the specialized magazines La vida útil, Taipei and La tierra quema, which was presented at the Mar del Plata International Film Festival.