The official language of Pakistan is Urdu, which is a 4-letter word. Urdu is an Indo-Aryan language spoken by over 100 million people in Pakistan and India. It is the national language of Pakistan and is also one of the 22 official languages of India. It is written in the Perso-Arabic script and is closely related to Hindi. Urdu has been influenced by Persian, Arabic, and Turkish, and is known for its poetic tradition.