The Tareen (or Tarin) (Pashto: ترین) is a tribe of Western Afghans.
Tareen is known to be the son of Sharkbun who was the grandson of Qais Abdur Rasheed; the common ancestor of all Pashtuns. Tareen had three sons; Tor, Speen and Abdal. The Tor-Tareen branch settled mainly in Dukki, Balochistan and Speen-Tareen branch settled in Pashin, Balochistan. Abdal, however, is the ancestor of famous Abdali/Durrani tribe which ruled Afghanistan for a long time.
Historically, little is known of the Tareen tribe prior to the invasions of India by the Ghorid sultan and invader Muhammad Ghori in the late 12th century.
By the 15th or 16th century, by and large the various sections of the Tareen tribe had settled in the areas they still inhabit in the modern day Khyber Pakhtunkhwa, Pakistan, indeed some of them assimilating into earlier cultures and/or ethnic groups in these areas.
Sher Shah Suri brought Tareen Pashtun tribes from Pashtun areas and got them settled in different parts of central and northern India, including what today is Pakistan. Tareens were also settled in a significant number in Bihar, a state in India, as it was the headquarters of Sher Shah Suri. Significant number of Tareens settled in Bhagalpur, a city in Bihar. Among their earlier known chiefs in Bhagalpur was Alaf Khan, a Mansabdar of rank Chahr Hazari (Four thousand) who lived in the time of Akbar the Great.
Later on, during the reign of the Mughal emperor Shah Jahan (reigned 1628-1658) a group of Tarins/Tareens from Tarin Kowt immigrated to the present-day NWFP (Khyber-Pakhtunkhwa) where their descendants still live.
In the mid 18th century, during the invasions of northwestern India, including the modern day Pakistan, by Ahmad Shah Abdali, the ruler of Durrani Empire c. 1750s–60s, a contingent of Tareens came into prominence for the role they played at the Third Battle of Panipat, January 1761, against the Maratha Empire. This little community belonging chiefly to the Batezai section of the Tor Tareen/Tarin, thereafter gained wide renown as their chiefs were appointed as governors and administrators of the lower Hazara plains, as well as the neighbouring Chach area of in Northern Punjab.