Igusa, or , (soft rush, lit. well grass) is a Japanese name. It may refer to:
Place name Igusa High School, a high school in Nerima, Tokyo Igusa, former village in Saitama Prefecture Igusa, Suginami, Tokyo with Kami-Igusa (Upper Igusa) and Shimo-Igusa (Lower Igusa) train stations in Suginami, Tokyo
Surname Jun-ichi Igusa ( Igusa Jun’ichi), d. 2013, Japanese mathematician at Johns Hopkins University Kiyoshi Igusa, Japanese-American mathematician and professor at Brandeis University, son of Jun-ichi Igusa Mutsuko Igusa, current publisher of Nihon Tarento Meikan, a directory of Japanese television personalities Shigetaro Igusa, founder of "Leisure Tsūshin-sha", now "VIP Times", publishers of Nihon Tarento Meikan
Fictional characters Igusa, green-haired character from the light novel, manga, and anime series Inukami!