A new and distinct seedless mandarin named `Late Seedless Mandarin` is characterized by late fruit production in April through to May in the citrus areas of Sicily, Italy and Riverside, Calif. The tree has high yields and bears from year three onwards. It is further characterized by being a triploid and genetically seedless. The seedless fruit is well sized, has a typical mandarin shape (round, flattened) and has acceptable rind thickness with a smooth texture. The fruit has good acid/sugar ratios, has acceptable shipping characteristics, internal and external color is excellent at harvest, and eating quality is excellent. The fruit has an average juice content of about 45% to 60% at harvest.