Family name Tranquille (Tranquille 
, Trankil ) , worldwide, is quite a rare last name. The family name Tranquille is habitual in Mauritius, where it is quite a common surname, Algeria, where it is quite a rare surname, and Cameroon. Not in comparison with a country's population, this name is the most popular in Algeria, France, and Cameroon. Very seldom, Tranquille is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tranquille | Algeria, Mauritius, France, Morocco, Cameroon |
| Trankil | Cameroon, France, Algeria, Morocco |
Tranquillite, Tranquillus, Tranquillé, Trànqùille, and Trãnquíllë
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henri tranquille Canadian writer, CA (b. 1916) |
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| régis tranquille Seychellois sprinter, SC (b. 1955) |
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| viviane tranquille Canadian taekwondoin, CA (b. 1999) |
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