Sialoliths are calcerous concretions seen in the salivary gland parenchyma or its duct, accounting more than 50% of salivary gland diseases. Giant sialoliths measuring 35 mm are rare, with only 19 cases published in literature. Ninety‑five percent of the giant sialoliths reported were in the submandibular gland, all occurring in male patients. Preoperative imaging help in defining the size,location of lesion and helps in planning approach. We are reporting a rare case of giant submandibular gland sialolith in a 52 year male patient measuring 40 mm (probably largest in india), which was removed through transcervical approach under general anesthesia.