Isaac b. Ruben, [100]

Ishmael, [188], [190], [224]

Ishmael b. Elishah, [222], [299]

Israel Baalshem (see [Baalshem, Israel])

Jacob of Corbeil, [322]

Jacob Dubna, [91]

Jacob the Levite, or Maharil, [143], [144]

Jacob Sasportas, [101], [102]

Jacob Tam, [210]

Jannai, [226]