Logocentrism, also called phallogocentrism, is a neologism coined by Jacques Derrida, used in Deconstruction (a postmodern form of philosophical criticism and literary criticism) to refer to the perceived tendency of Western thought to locate the center of any discourse within the logos (speech and words) and the phallus (embodiments representing the male genitalia).

It is also the tendential priviledging of the signified over the signifier, asserting the signified's status as more natural or pure. This is manifested in the works of Plato, Rousseau, Saussure and Levi-Strauss in a priviledging of speech over writing, writing being seen as the supplementary and violent bastard-child of speech.

Logocentricism deals with Western Philosophy's preoccupation with truth, reason and the word. And a belief that this gives us access to what is behind reality. It also identifies the way in which human thought often operates in binaries such as reality/appearance, presence/absence, heterosexual/homosexual, literal/metaphorical, transcendental/ empirical, signified/signifier

An integral part of this is Phonocentrism, which is the prioritising of speech of writing. This is explored in Derrida's analysis of the Phaedrus and the Pharmacy by Plato.