藤井一至（ふじい・かずみち、1981年生まれ）は、日本の土壌学者。京都大学農学部卒業、同大学大学院農学研究科博士課程修了、博士（農学）。森林総合研究所主任研究員を経て、現在は福島国際研究教育機構（F-REI）ユニットリーダーを務める。土壌の生成や進化、森林生態系、地球環境の変化を専門とし、世界各地でフィールドワークを行いながら、「土」が生命や文明を支える基盤であることをわかりやすく発信している。『土 地球最後のナゾ』で河合隼雄学芸賞を受賞。著書に『大地の五億年』『土と生命の46億年史』『土の大研究』などがある。
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Kazumichi Fujii (born 1981) is a Japanese soil scientist. After earning his Ph.D. in Agriculture from Kyoto University, he served as a senior researcher at the Forestry and Forest Products Research Institute and is currently a Unit Leader at the Fukushima Institute for Research, Education and Innovation (F-REI). His research focuses on soil formation, forest ecosystems, and the interactions between soil, life, and the global environment. Combining fieldwork with engaging science communication, he has helped bring the hidden world of soils to a broad audience. His book "Soil: The Last Mystery of the Earth" received the Kawai Hayao Academic Prize. His other notable books include "Five Hundred Million Years of the Earth," "The 4.6-Billion-Year History of Soil and Life," and "The Big Book of Soil."
