La vida en un hilo

Life on a Thread
Spanish theatrical release poster
Directed by	Edgar Neville
Produced by	Edgar Neville
Written by	Edgar Neville
Starring	Conchita Montes Rafael Durán Guillermo Marín
Music by	José Muñoz Molleda
Cinematography	Henri Barreyre (as Enrique Barreyre)
Edited by	Mariano Pombo
Release date	April 26, 1945
Running time	92 minutes
Country	Spain
Language	Spanish

Life on a Thread (Spanish:La vida en un hilo) is a 1945 Spanish comedy film written, directed and produced by Edgar Neville. Neville later modified the film for the stage, with an adaptation of the same name.

It was remade twice, as a Mexican film La engañadora in (1955), directed by José Díaz Morales and as Spanish film titled Una mujer bajo la lluvia in (1992) directed by Gerardo Vera.