This is a list of surnames in which the usage is Japanese; and the first letter is I; and the length is 4.
Imai 今井, いまい JapaneseFrom Japanese
今 (ima) meaning "now, present" and
井 (i) meaning "well, mine shaft, pit".
Itou 伊藤, いとう JapaneseAlternate transcription of Japanese Kanji
伊藤 (see
Itō).
Iwai 岩井, いわい JapaneseFrom Japanese
岩 (iwa) meaning "cliff, rocks" and
井 (i) meaning "well, mine shaft, pit".