Michel Foucault (philosopher)

Léon Foucault (physicist)

Foucault pendulum

The name Foucauld could refer to Charles de Foucauld.

Jeffrey Foucault (musician)

Fizeau-Foucault apparatus

Annick Foucault, the real name of a French professional dominatrix

Foucault's Pendulum (book), a 1988 book by Umberto Eco

Foucault current, electromagnetic phenomenon also known as eddy current

Foucault (crater), a small lunar impact crater