Turkish ( Türkçe (help·info)), also referred to as Istanbul Turkish or Anatolian Turkish, is the most widely-spoken of the Turkic languages, with over 63 million native speakers. Speakers are located predominantly in Turkey, with smaller groups in Germany, Bulgaria, Macedonia, Northern Cyprus, Greece, and other parts of Eastern Europe, Caucasus and Central Asia.

The roots of the language can be traced to Central Asia, with the first known written records dating back nearly 1,300 years. To the west, the influence of Ottoman Turkish—the variety of the Turkish language that was used as the administrative and literary language of the Ottoman Empire—spread as the Ottoman Empire expanded. In 1928, as one of Atatürk's Reforms in the early years of the Republic of Turkey, the Ottoman script was replaced with a Latin alphabet. Concurrently, the newly founded Turkish Language Association initiated a drive to reform and standardize the language.

The distinctive characteristics of Turkish are vowel harmony and extensive agglutination. The basic word order of Turkish is subject–object–verb. Turkish has no noun classes or grammatical gender. Turkish has a strong T–V distinction and usage of honorifics. Turkish uses second-person pronouns that distinguish varying levels of politeness, social distance, age, courtesy or familiarity toward the addressee. The plural second-person pronoun and verb forms are used referring to a single person out of respect. On occasion, double plural second-person "sizler" may be used to refer to a much-respected person.