Editing List of companies of Japan (section)

==I==
{| class="wikitable"
|-
! English
! Japanese
! [[Rōmaji]]
! [[Tokyo Stock Exchange|TSE]]
|-
| [[Ibanez]]
| [[:ja:アイバニーズ|アイバニーズ]]
| ''Aibanīzu''
|
|-
| [[Ibiden]]
| [[:ja:イビデン|イビデン株式会社]]
| ''Ibiden Kabushiki-kaisha''
| {{Tyo1|4062}}
|-
| [[Icom Incorporated|Icom]]
| [[:ja:アイコム|アイコム株式会社]]
| ''Aikomu Kabushiki-gaisha''
| {{Tyo1|6820}}
|-
| [[Idea Factory]]
| [[:ja:アイディアファクトリー|アイディアファクトリー株式会社]]
| ''Aidia Fakutorī Kabushiki-gaisha''
|
|-
| [[Idemitsu Kosan]]
| [[:ja:出光興産|出光興産株式会社]]
| ''Idemitsu Kōsan Kabushiki-gaisha''
| {{Tyo1|5019}}
|-
| [[IHI Corporation]]<br><small>formerly ''Ishikawajima-Harima''</small>
| [[:ja:IHI|株式会社IHI]]
| ''Kabushiki-gaisha IHI''
| {{Tyo1|7013}}
|-
| [[Impul]]
| [[:ja:ホシノインパル|株式会社ホシノインパル]]
| ''Kabushiki-gaisha Impul''
|
|-
| [[Imperial Hotel (company)|Imperial Hotel]]
| [[:ja:帝国ホテル|株式会社帝国ホテル]]
| ''Kabushiki-gaisha Teikoku Hoteru''
|
|-
| [[Index Corporation]]
| [[:ja:インデックス (企業)|株式会社インデックス]]
| ''Kabushiki-gaisha Indekkusu''
| 
|-
| [[Inpex]]
| [[:ja:国際石油開発帝石|国際石油開発帝石株式会社]]
| ''Kokusai Sekiyu Kaihatsu Teiseki Kabushiki-gaisha''
| {{Tyo1|1605}}
|-
| [[Irem]]
| [[:ja:アイレムソフトウェアエンジニアリング|アイレムソフトウェアエンジニアリング株式会社]]
| ''Airemu Sofutowea Enjiniaringu Kabushiki-gaisha''
|
|-
| [[Iris Ohyama]]
| [[:ja:アイリスオーヤマ|アイリスオーヤマ株式会社]]
| ''Airisu-Ōyama Kabushiki-gaisha''
|
|-
| [[Iseki]]
| [[:ja:井関農機|井関農機株式会社]]
| ''Iseki Nōki Kabushiki-gaisha''
| {{Tyo1|6310}}
|-
| [[Isetan]]
| [[:ja:伊勢丹|株式会社伊勢丹]]
| ''Kabushiki-gaisha Isetan''
| {{Tyo1|8238}}
|-
| [[Ishida (company)|Ishida]]
| [[:ja:イシダ|株式会社 イシダ]]
| ''Kabushiki-gaisha Ishida''
|
|-
| [[Isuzu]]
| [[:ja:いすゞ自動車|いすゞ自動車株式会社]]
| ''Isuzu Jidōsha Kabushiki-gaisha''
| {{Tyo1|7202}}
|-
| [[Ito-Yokado]]
| [[:ja:イトーヨーカ堂|株式会社イトーヨーカ堂]]
| ''Kabushiki-gaisha Itō Yōkadō''
|
|-
| [[Itochu]]<br><small>formerly ''C. Itoh & Co.''</small>
| [[:ja:伊藤忠商事|伊藤忠商事株式会社]]
| ''Itōchū Shōji Kabushiki-gaisha''
| {{Tyo1|8001}}
|-
| [[Itochu Techno-Solutions]]
| [[:ja:伊藤忠テクノソリューションズ|伊藤忠テクノソリューションズ株式会社]]
| ''Itōchū Tekuno-soryūshonzu Kabushiki-gaisha''
| {{Tyo1|4739}}
|-
| [[Iwataya|Iwataya Mitsukoshi]]
| [[:ja:岩田屋|株式会社岩田屋三越]]
| ''Kabushiki-gaisha Iwataya Mitsukoshi''
|
|-
| [[Izumiya]]
| [[:ja:イズミヤ|イズミヤ株式会社]]
| ''Izumiya Kabushiki-gaisha''
|
|}