Chach may refer to Chach, a historic principality of Uzbekistan and the modern-day location of the capital city Tashkent and Tashkent Region Chhachh, a valley region of Attock, northern Pakistan Chhachi (disambiguation) Chach of Alor, a historic ruler of Sindh
See also Chach Nama, a book about the history of Sindh Battle of Chach, an 11th-century battle fought at the banks of the Indus Chech, a geographical region encompassing parts of Bulgaria and Greece