Hatt may refer to:
Places Hatt, Cornwall, England Hatt Building, on the National Register of Historic Places listings in Napa County, California
Other uses Hatt (surname) Arabic (ḫaṭṭ: "line, writing"), everyday Arabic handwriting or script in contrast to style and system requirements of calligraphy Cf. :ar:خط (توضيح) (Hatt, disambiguation) Hijazi script ( ḫaṭṭ ḥiǧāzī). Hatt-i humayun, edict of the Ottoman government (e.g. Hatt-ı Hümayun of 1856) Help authoring tools and Techniques, a software program used to create help documents The Hatt family, fictional characters including Sir Topham Hatt, The Fat Controller, the head of the railway in The Railway Series of books written by Rev W. V. Awdry
See also Hat (disambiguation) Hats (disambiguation) Het (disambiguation) Hett (disambiguation)