Save Type Surname (from location) Usage Japanese Scripts 岩井(Japanese Kanji) いわい(Japanese Hiragana) Pronounced Pron. /i.ɰᵝä.i/ [key·simplify] Meaning & History From Japanese 岩 (iwa) meaning "cliff, rocks" and 井 (i) meaning "well, mine shaft, pit". Related Names Rootsiwa + i