Philosophical Investigations (disambiguation)

Philosophical Investigations is a book by Wittgenstein.

Philosophical Investigations may also refer to:

• Philosophical Investigations (journal), an academic journal published by Wiley-Blackwell
• Journal of Philosophical Investigations, an academic journal published by University of Tabriz
• A book series covering diverse subjects in Applied Philosophy published by Routledge
• Linguistic and Philosophical Investigations, an academic journal published by Addleton Academic
• Philosophical Investigations into the Essence of Human Freedom, a book by Friedrich Schelling

• A Philosophical Investigation, a novel by Philip Kerr

A performance act by Linda Phillimore reading her poem "Philosophical Investigation #76"