Livedoor has its headquarters in the ."会社概要 - 会社案内 - 株式会社ライブドア ." Livedoor. Retrieved on December 14, 2011. "〒160-0023 東京都新宿区西新宿7-20-1 住友不動産西新宿ビル24F,25F（総合受付：24F）" - Map H.I.S. has its headquarters in the Shinjuku Oak Tower."Company Info." H.I.S. Retrieved on March 11, 2010. Seiko Epson's Tokyo Office is in the Shinjuku NS Building."Head Office & Japanese Facilities." Seiko Epson. Retrieved on January 13, 2009. Capcom's Tokyo offices are located in the Shinjuku Mitsui Building"Locations." Capcom. Retrieved on August 12, 2011. "Shinjuku Mitsui Building 2-1-1 Nishi Shinjuku, Shinjuku-ku, Tokyo" and Keihin Corporation is headquartered in the Shinjuku Nomura Building."Company Overview." Keihin Corporation. Retrieved on May 23, 2018. Taisei Corporation also has its headquarters in the district."Corporate Data." Taisei Corporation. Retrieved on February 20, 2012. "Head Office 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-0606"
