As of 2023, Japan had the largest reserves of iodine across the globe, estimated at some 4.9 million metric tons. This was followed by Chile, with reserves amounting to 610,000 metric tons. In comparison, Iran had iodine reserves of about 40,000 metric tons that year.
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US Geological Survey. (January 31, 2024). Leading countries based on iodine reserves worldwide as of 2023 (in metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 22, 2026, from /statistics/264946/global-iodine-reserves-by-countries/
US Geological Survey. "Leading countries based on iodine reserves worldwide as of 2023 (in metric tons)." Chart. January 31, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 22, 2026. /statistics/264946/global-iodine-reserves-by-countries/
US Geological Survey. (2024). Leading countries based on iodine reserves worldwide as of 2023 (in metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 22, 2026. /statistics/264946/global-iodine-reserves-by-countries/
US Geological Survey. "Leading Countries Based on Iodine Reserves Worldwide as of 2023 (in Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Jan 2024, /statistics/264946/global-iodine-reserves-by-countries/
US Geological Survey, Leading countries based on iodine reserves worldwide as of 2023 (in metric tons) ÌÇÐÄÆƽâ°æ, /statistics/264946/global-iodine-reserves-by-countries/ (last visited July 22, 2026)
Leading countries based on iodine reserves worldwide as of 2023 (in metric tons) [Graph], US Geological Survey, January 31, 2024. [Online]. Available: /statistics/264946/global-iodine-reserves-by-countries/
