Citrus trees can be productively grown in Mediterranean region of Turkey. In this study, six orange varieties (Belladonna, Biondo, Biondo Riccio, Calabrese, Mediterranean Sweet, Parson Brown), grafted C. aurantium L. var. Yerli, were re-evaluated under Antalya ecological conditions. During the 2 consecutive trial years, fruit dimensions (weight, height, width), rind thickness, seed number, total soluble solids (TSS), titratable acidity (TA), TSS/TA ratio, fruit juice content, pH, vitamin C content were analyzed. There were statistically differences according to some pomological properties of six varieties. Mediterranean Sweet has the biggest fruits (187.54 g). The highest TSS ratio (11.0%) and vitamin C content (61.20 mg/100ml) was in Parson Brown orange. Biondo fruits have the lowest rind thickness.