IIJ Announces the Filing of Annual Report on Form 20-F With the U.S. Securities and Exchange Commission

Internet Initiative Japan Inc. ("IIJ") (Nasdaq:IIJI) (TSE1:3774), one of Japan's leading Internet access and comprehensive network solutions providers, hereby announces that IIJ has filed its annual report on Form 20-F for the fiscal year ended March 31, 2012 (the "Annual Report") with the U.S. Securities and Exchange Commission. The Annual Report includes IIJ's audited consolidated financial statements prepared under U.S. GAAP as of and for the fiscal year ended March 31, 2012. The Annual Report is available on IIJ's website at the following website address:

http://www.iij.ad.jp/en/ir/library/sec/index.html

In addition, shareholders of IIJ may request a hard copy of the Annual Report free of charge by emailing [e-mail].

About IIJ

Founded in 1992, Internet Initiative Japan Inc. is one of Japan's leading Internet-access and comprehensive network solutions provider. IIJ and its group companies provide total network solutions that mainly cater to high-end corporate customers. IIJ's services include high-quality systems integration and security services, Internet access, hosting/housing, and content design. Moreover, IIJ has built one of the largest Internet backbone networks in Japan, and between Japan and the United States. IIJ listed on NASDAQ in 1999 and on the First Section of the Tokyo Stock Exchange in 2006.

The Internet Initiative Japan Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4613

CONTACT: Yuko Kazama (Ms.) at IIJ Corporate Planning Department
         Tel: [phone]
         E-mail: [e-mail]
         URL: http://www.iij.ad.jp/en/