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Klein Dytham architecture (KDa) is a multi-disciplinary design practice known for architecture, interiors, public spaces and installations. Established by Royal College of Art graduates Astrid Klein and Mark Dytham in Tokyo in 1991.^[1] In 1996, Yukinari Hisayama joined KDa as a key member.

Before establishing KDa, Astrid and Mark worked at Toyo Ito & Associates in Tokyo.^[2]

Today KDa is a multi-lingual office with an international reputation and a high-profile client list including Google, Tsutaya, Sony, Virgin Atlantic, Nike, Uniqlo, Selfridge's and Japan Rail.

In 2003 Mark and Astrid devised PechaKucha Night^[3] as an event for Tokyo designers to meet and share their work – it has now grown into an international network with events running in over 1,200 cities around the globe, inspiring creatives worldwide^[4].

• Open House, Bangkok, Thailand 2017
• Ginza Place, Tokyo, Japan 2016
• Daikanyama T-SITE／Tsutaya Books, Tokyo, Japan 2011

• American Retail Environment Awards
• D&AD Awards
• World Architecture Festival Awards
• Wallpaper* Design Awards
• Design for Asia

• Klein Dytham architecture Official website
• PechaKucha Official website