Purpose: To report a case of large sarcoid choroidal granuloma that was successfully treated with steroid pulse therapy. Case Report: A 38-year-old man presented with the primary complaint of decreased visual acuity (VA) in his left eye. Upon examination, a large white protruding lesion of 10 × 8 papilla diameter in size was observed in the macular region, and slightly temporal to it, in the patient’s left eye. Whole-body contrast-enhanced computed tomography performed for differential diagnosis detected numerous enlarged lymph nodes throughout the body, including the bilateral hilar regions. Sarcoidosis was diagnosed by biopsy of the right cervical lymph nodes showing noncaseating epithelioid cell granuloma. The fundus lesion was found to be a choroidal granuloma caused by sarcoidosis, and steroid pulse therapy was started. The granuloma was considerably decreased, and the VA in the left eye improved to 0.7 after 2 months. Conclusion: Steroid pulse therapy was found to be effective as an initial treatment for a large sarcoid choroidal granuloma.