Nişanyan dictionary is a dictionary for the Turkish language that has been created by Sevan Nişanyan. It is the first dictionary of its kind in Turkey and has been published in several different editions since 2002. The dictionary's content and structure have changed with each edition, but its overall structure has remained the same.

The dictionary contains two main sections. The first section is the word choice section, and the second is the history section. In the word choice section, the user can choose from a list of words that are categorized according to the frequency of usage, the part of speech, the gender, and the conjugation. The user can also add new words to the dictionary by creating a new entry. The user can add a word with a translation, an explanation, and a synonym. The user can also add a word with a pronunciation and a grammar. The user can also choose from a list of verbs that are categorized according to the type of the verb, the subject, the object, the verb conjugation, and the tenses.