Mitsui Fudosan is a major Japanese real estate group active in urban development, housing, retail, hotels and property management.

Mitsui Fudosan was established as an independent company in 1941 after the real estate division of Mitsui Company was separated. Its headquarters are in Nihonbashi, Tokyo, and it is listed in Tokyo under ticker 8801. The group had 454 companies in Japan and overseas as of March 2026. Its activities span office, retail, residential, logistics, hotel and urban-development projects.