A dictionary is a list of words and their meanings.

Dictionary may also mean:

• Dictionary (software), a dictionary included in Mac OS X v10.4
• Dictionary (game), a party game in which the object of the game is be the first player to guess the meaning of an obscure word chosen from a dictionary.

Dictionary may also refer to:

• Biographical dictionary
• Data dictionary, a set of metadata that contains definitions and representations of data elements (a read-only set of database tables and database views)
• Associative array, a specific type of Set (computer science)
• Dictionary attack, a technique to determine a password

fr:Dictionnaire (homonymie) zh:?? (???)