Purpose: We evaluate the clinical, radiologic and pathologic features of giant cell tumor of tendon sheath (GCTTS) in the foot Materials and Methods: Twelve cases of GCTTS excised from foot region, at our hospital from 1999 to 2002, were analyzed. The mean duration of follow up was 19 months. The age and sex of the patient, location and size of the lesion, symptom as well as radiologic findings were evaluated. Results: The most common symptom was painless mass in 7 patients. Three patients had pain sympton and 2 patients had tenderness. The mean duration from identification of the mass to excision was 14 months. Seven cases were located in the forefoot, most commonly in the big toe with 4 cases, 2 cases in the midfoot and 3 cases in the hindfoot. The average diameter along the long axis was 2.8cm. Conclusion: GCTTS in the foot was more common in the big toe and also plantar side same as in the hand. But bony erosion and pain were more frequent than in the hand.