- Dec 2005 Start of sales of "Yakult" in Austria
- Oct 2005 Yakult Oesterreich GmbH to be Established
- Sep 2005 Beijing Yakult Co., Ltd to be Established
- Sep 2005 Start Operations at Yakult Honsha European Research Center for Microbiology ESV
- Sep 2005 The Proactive Expansion of the Global Probiotics Council
- Jul 2005 Regarding Yakult's sponsorship of the FINA World Championships and World Swimming Championships (25m)
- Jun 2005 Kirin Group and Yakult Honsha to Form Business Alliance
- May 2005 Start of sales of "Yakult" in Hispanic market supermarkets in the United States
- Apr 2005 Establishment of a Sales and Management-Type Umbrella Company in China
- Apr 2005 Business Partnership Activities with Groupe Danone of France
- Mar 2005 Juntendo University's First Endowed Chair Established for the Verification of the Effect of Probiotics to Prevent Infection