Nihon OA Research Co., Ltd.

Nihon OA Research Co., Ltd. (NOAR) is a Japanese information technology services company headquartered in Chiyoda-ku, Tokyo. Founded in May 1983 in Bunkyo-ku, Tokyo as a limited liability company, it was reorganized into a stock company in October 1984. The company has built its business primarily on commissioned software development for public-sector clients, including government ministries and agencies such as the Ministry of Finance and the National Tax Agency, as well as financial institutions and private corporations. Its core strength lies in large-scale, mission-critical system development requiring high levels of expertise and reliability. NOAR positions itself around the management philosophy of 'Technical Capability × Human Capability = NOAR,' emphasizing both advanced engineering skills and the integrity and dedication of its people. The company provides system development services in the public, financial, and corporate sectors, and has been recognized as a business partner by NTT DATA. Its major clients include the NTT DATA Group, NEC Corporation, NSD, CIJ, IST Software, Cube System, INTEC, Nextgen, Tokyo Gas, the Ministry of Land, Infrastructure, Transport and Tourism, and the National Tax Agency. The company has been listed on the Nagoya Stock Exchange since December 2024, when it moved from the TOKYO PRO Market to the Nagoya Stock Exchange Next Market. In March 2026, it was approved for a market change to the Nagoya Stock Exchange Main Market. As of December 2025, NOAR had 239 employees and capital of 120,360 thousand yen. Its fiscal year ends on December 31. The representative director and president is Hisashi Sekiya. The company operates a Kansai Office in Yodogawa-ku, Osaka, in addition to its Tokyo headquarters.

Nihon OA Research Co., Ltd. was established in May 1983 in Koishikawa, Bunkyo-ku, Tokyo, as a limited liability company (yugen kaisha). In October 1984, it was reorganized into a stock company (kabushiki kaisha). The company initially focused on commissioned software development, particularly for public-sector clients. In January 1986, its head office functions were consolidated in Hakusan, Bunkyo-ku. In September 2006, the head office was relocated to Hongo, Bunkyo-ku. In April 2008, NOAR was certified as an Associate Partner of NTT DATA, and in July 2008 it obtained PrivacyMark certification. In April 2010, it opened the Kansai Office (now Kansai Office) in Osaka. In February 2012, the head office was moved to Iidabashi 3-chome, Chiyoda-ku, and in October 2012 the company obtained ISMS certification. The Kansai Office was relocated to Ikeda, Osaka in October 2013, and then to Yodogawa-ku, Osaka in April 2016. In March 2017, the Tokyo head office was moved to Iidabashi 2-chome, Chiyoda-ku. In December 2022, NOAR listed its shares on the TOKYO PRO Market. In July 2023, the Tokyo head office was relocated to Nishikanda 3-chome, Chiyoda-ku. On December 22, 2024, the company was delisted from the TOKYO PRO Market, and on December 23, 2024, it listed on the Nagoya Stock Exchange Next Market. On March 4, 2026, it was approved for a market change to the Nagoya Stock Exchange Main Market. As of December 2025, the company had 239 employees and capital of 120,360 thousand yen. Its major clients include NTT DATA Group, NEC, NSD, CIJ, IST Software, Cube System, INTEC, Nextgen, Tokyo Gas, the Ministry of Land, Infrastructure, Transport and Tourism, and the National Tax Agency. The representative director and president is Hisashi Sekiya.

• Established as a limited liability company in Koishikawa, Bunkyo-ku, Tokyo.

• Reorganized into a stock company (kabushiki kaisha).

• Head office functions consolidated in Hakusan, Bunkyo-ku, Tokyo.

• Head office relocated to Hongo, Bunkyo-ku, Tokyo.

• Certified as an Associate Partner of NTT DATA.

• Obtained PrivacyMark certification.

• Opened Kansai Office in Osaka.

• Head office relocated to Iidabashi 3-chome, Chiyoda-ku, Tokyo.

• Obtained ISMS certification.

• Kansai Office relocated to Ikeda, Osaka.

• Kansai Office relocated to Yodogawa-ku, Osaka.

• Tokyo head office relocated to Iidabashi 2-chome, Chiyoda-ku, Tokyo.

• Listed on TOKYO PRO Market.

• Tokyo head office relocated to Nishikanda 3-chome, Chiyoda-ku, Tokyo.

• Delisted from TOKYO PRO Market.

• Listed on Nagoya Stock Exchange Next Market.

• Approved for market change to Nagoya Stock Exchange Main Market.

A trusted IT partner for mission-critical government and financial systems, built on technical expertise and human integrity.

• Government system development

  Custom software development for ministries and agencies, including the Ministry of Finance and the National Tax Agency.

• Financial system development

  System development for financial institutions.

• Corporate IT solutions

  IT solutions for private corporations.

1. 1株式会社 日本オーエー研究所noar.co.jp
2. 2企業情報 | 株式会社日本オーエー研究所noar.co.jp
3. 3Nihon OA Researchwikidata.org
4. 4日本オーエー研究所ja.wikipedia.org