Index (database), a feature in a computerized database which allows quick access to the rows in a table
Index (information technology), in computer science, either an integer which identifies an array element, or a data structure which enables fast lookup
Indexicality, in linguistics, the variation of meaning of an utterance according to certain features of the context in which it is uttered
This disambiguation page lists articles that are about something that can be called Index. If an internal link led you here, you may wish to change the link to point directly to the article meant.