The pomological diversity of the fig tree (Ficus carica L.) in Tunisian oases was studied using morphological descriptors. Twenty-one fig tree cultivars originating from the oases of Kébili, Tozeur and Gafsa were analyzed and compared. Analysis of variance, principal component analysis and hierarchical canonical analysis of fruit-related traits show great diversity within the studied cultivars. The study of this diversity of fig germplasm makes it possible to detect homonymous cases and synonymies. Some of them have been selected. Among the descriptors with a high degree of discrimination, those relating to the dimensions of the fruits, the color of the fruits, etc. Some morphological traits are likely to be used as descriptors for the classification of fig cultivars in Tunisia.