The license plates of Mauritania feature a white background with a blue label. The plates start with four digits, followed by two letters and end with a two-digit number. This combination provides information about the specific area where the vehicle is registered (e.g., "00" for Nouakchott). On the right side of the plate, there is a representation of Mauritanian license plates based on the Euro plate design. This includes a blue bar displaying a circular outline of the country and the distinctive "RIM" abbreviation (French: République Islamique de Mauritanie - Islamic Republic of Mauritania) in both Arabic and Latin letters. In older license plates, the blue bar is not present, and only the letters are displayed.

As stated before, the international vehicle registration code for Mauritania is RIM.

In 2017 it became optional to use Arabic letters instead of Latin letters, with the plate format flipped to reflect Arabic reading order, with an official list of letter pairs published in 2023.^[1]

• 00 - Nouakchott
• 01 - Hodh Ech Chargui
• 02 - Hodh El Gharbi
• 03 - Assaba
• 04 - Gorgol
• 05 - Brakna
• 06 - Trarza
• 07 - Adrar
• 08 - Dakhlet Nouadhibou
• 09 - Tagant
• 10 - Guidimaga
• 11 - Tiris Zemmour
• 12 - Inchiri

• MAURITANIA FRANCOPLAQUE
• Plateshack Mauritania