TounsiتونسيArabic (Maghrebi) Derived from Arabic تُونِسِيّ (tūnisiyy) meaning “Tunisian”, ultimately from تُونِس (tūnis) meaning "Tunisia, Tunis". It can refer to a native of the country of Tunisia, someone from the city of Tunis (in Tunisia), or the Tunisian Tounsi dialect of Arabic.
TouzaniتوزانيArabic (Maghrebi) Possibly derived from Aït Touzine, the name of a Rifian tribe in Morocco.
TrabelsiطرابلسيArabic (Maghrebi) Habitational name for someone originally from the city of Tripoli in Libya from Arabic طَرَابُلُس (ṭarābulus). The city's name ultimately comes from Ancient Greek Τρίπολις (Trípolis) meaning "three cities", from τρι- (tri-) meaning "three" and πόλις (pólis) meaning "city".