Orality is thought and verbal expression in societies where the technologies of literacy (especially writing and print) are unfamiliar to most of the population. The study of orality is closely allied to the study of oral tradition.

The term "orality" has been used in a variety of ways, often to describe, in a generalised fashion, the structures of consciousness found in cultures that do not employ, or employ minimally, the technologies of writing.

Walter J. Ong's work was foundational for the study of orality, and exemplifies the fact that despite the striking success and subsequent power of written language, the vast majority of languages are never written, and the basic orality of language is permanent.

In his later publications Ong distinguishes between two forms of orality: 'primary orality' and 'secondary orality'. Primary orality refers to thought and expression un-touched by the culture of writing of print; secondary orality is explained by Ong as oral culture defined (implicitly influenced) by the written and printed word, and includes oral culture made possible by technology such as a newscaster reading a news report on television.

In addition, 'residual orality' is also defined – it is the remnants, legacy, or influence of a predominately oral culture carried over into the written realm – an example might include the use of dialogue as a philosophical or didactic tool in written literature, such as used by the Greek thinker Plato.