Dialogue Concerning the Two Chief World Systems, a 1632 book by Galileo, comparing the Copernican system, and the traditional Ptolemaic system

Dialogue, often spelled dialog, is a conversation between two or more persons. Dialogue may also refer to:

Dialogue (fiction), conversation between two characters in fiction or theaters

Dialog box, a computer graphical user interface element

Dialog system, a computer system intended to converse with a human

Dialog (online database), an online information service owned by Thomson Corporation

Centre for Dialogue, a research institution in Melbourne, Australia

Ericsson Dialog, a model of telephone made by Ericsson

Dialogue (Part I & II), a song by the jazz-fusion band, Chicago

dialog (Shell Script), for displaying interactive dialog boxes from an operating shell script.

Gorenje Dialog, a microcomputer system developed by Gorenje in 1980s.

Dialogue, a television show on CCTV International

Dialogue, an Ohio-based fine arts magazine

Dialogue (album), the 1999 album by electronic artist Four Tet.