
Acting
Marthe Keller (born 28 January 1945; Basel, Switzerland) is a Swiss actress and opera director. She studied ballet as a child, but stopped after a skiing accident at age 16. She changed to acting, and worked in Berlin at the Schiller Theatre and the Berliner Ensemble.
Keller's earliest film appearances were in Funeral in Berlin (1966, uncredited) and the German film Wilder Reiter GmbH (1967). She appeared in a series of French films in the 1970s, including Un cave (1971), La raison du plus fou (1973) and Toute une vie (And Now My Love, 1974). Her most famous American film appearances are her Golden Globe-nominated performance as Dustin Hoffman's girlfriend in Marathon Man and her performance as a femme fatale Arab terrorist who leads an attack on the Super Bowl in Black Sunday, both of them were ill-fated characters at the climax of each film. Keller also acted with William Holden in the 1978 Billy Wilder film Fedora. She appeared alongside Al Pacino in the auto racing film Bobby Deerfield, and subsequently the two of them were involved in a relationship. Since then, Keller has worked more steadily in European cinema compared to American movies. Her later films include Dark Eyes, with Marcello Mastroianni.
In 2001, Keller appeared in a Broadway adaptation of Abby Mann's play Judgment at Nuremberg as Mrs. Bertholt (the role played by Marlene Dietrich in the 1961 Stanley Kramer film version). She was nominated for a Tony Award as Best Featured Actress for this performance.
In addition to her work in film and theatre, Keller has developed a career in classical music as a speaker and opera director. She has performed the speaking role of Joan of Arc in the oratorio Jeanne d'Arc au Bûcher of Arthur Honegger on several occasions, with conductors such as Seiji Ozawa and Kurt Masur. She has recorded the role for Deutsche Grammophon with Ozawa (DG 429 412-2). Keller has also recited the spoken part in Igor Stravinsky's Perséphone. She has performed classical music melodramas for speaker and piano in recital. The Swiss composer Michael Jarrell wrote the melodrama Cassandre, after the novel of Christa Wolf, for Keller, who gave the world premiere in 1994.

The Amateur
2025
The Amateur
2025

One Life
2023
One Life
2023

Mars Express
2023
Mars Express
2023

Heidi's Alpine Dream
2022
Heidi's Alpine Dream
2022

Everybody Loves Jeanne
2022
Everybody Loves Jeanne
2022

Morceaux de Cannes
2021
Morceaux de Cannes
2021

My Wonderful Wanda
2021
My Wonderful Wanda
2021

My Little Sister
2020
My Little Sister
2020

Al Pacino: The Reluctant Star
2020
Al Pacino: The Reluctant Star
2020

The Holy Family
2019
The Holy Family
2019

The Staggering Girl
2019
The Staggering Girl
2019

Sing Me Back Home
2019
Sing Me Back Home
2019

The Witness
2019
The Witness
2019

Marthe Keller, du mur de Berlin à Hollywood
2019
Marthe Keller, du mur de Berlin à Hollywood
2019

Breath of Life
2018
Breath of Life
2018

Unveiled
2018
Unveiled
2018

The Escape
2018
The Escape
2018

Never Be Boring: Billy Wilder
2017
Never Be Boring: Billy Wilder
2017

Murder In The Auvergne Mountains
2017
Murder In The Auvergne Mountains
2017

Miséricorde
2016
Miséricorde
2016

After Love
2016
After Love
2016

Amnesia
2015
Amnesia
2015

Homo Faber (Trois femmes)
2015
Homo Faber (Trois femmes)
2015

La vie à l'envers
2014
La vie à l'envers
2014