Rabbi Israel Elijah Joshua Trunk of Kutno (1821-1893) was an important Polish posek of the late 19th century.
He was born in 1821, and named after three great rabbis: the Baal Shem Tov, Vilna Gaon, and Pnei Yehoshua.
At age 14 he married Friva, the orphan daughter of R' Haim ben Rabbi Yehudah of Rawicz.
Starting in 1840, he served as the rabbi of Szreńsk, Gąbin, Warka, and Pułtusk in succession.
He praised the book Derishat Tzion by R' Zvi Hirsch Kalischer upon its publication, and in 1886 visited the Land of Israel with the goal of encouraging the Old Yishuv to begin agricultural settlement.