The dinar (Arabic: دينار, ISO 4217 code: TND) is the national currency of Tunisia.

The abbreviation DT is often used in Tunisia, although writing "dinar" after the amount is also acceptable (TND is less colloquial, and tends to be used more in financial circles); the abbreviation TD is also mentioned in a few places, but is less frequently used, given the common use of the French language in Tunisia, and the French derivation of DT (i.e., dinar tunisien).

The name "dinar" is derived from the Roman denarius, used in the Africa province, the ancient territory of Carthage, modern day Tunisia.

The dinar did not follow the devaluation of the French franc in 1958, thus the exchange rate peg was abandoned.

After the fall of the Ben Ali regime in Tunisia, a new set of banknotes was issued progressively to replace the banknotes bearing motifs of the Ben Ali regime; on 31 December 2019, those notes issued prior to 2011 were completely demonetized.

Accordingly, one dinar and a half is often referred to as khomstach en miya (literally fifteen hundred).

This convention is used even for higher prices, for example 70,000 dinars would be called sab'in maliun (seventy million).

[10] Every year, each citizen can convert into foreign currency up to 6,000 Tunisian dinars before departure from the country.

Therefore, prices at duty-free shops are in convertible currencies such as euros, US dollars and British pounds.