アメリカオハイオ州生まれ。世界の折り紙界の第一人者として知られている氏は、折り紙と数学の融合を試みたパイオニアの一人であり、その作風は西洋の数学的折り紙設計と東洋の芸術的な線と造形を重視する作品の両側面を持っている。著書多数。

Robert J. Lang has been an avid student of origami for over thirty years and is now recognized as one of the world1s leading masters of the art with over 350 designs cataloged and diagrammed. He is noted for designs of great detail and realism, and includes in his repertoire some of the most complex origami designs ever created. His work combines aspects of the Western school of mathematical origami design with the Eastern emphasis upon line and form to yield models that are at once distinctive, elegant, and challenging to fold. Dr. Lang was invited to address the Nippon (Japan) Origami Association1s annual meeting (in 1992) and has been an invited guest at international origami conventions around the world. Dr. Lang is one of the pioneers of the cross-disciplinary marriage of origami with mathematics; he is a columnist for Origami Tanteidan Magazine, the journal of the Japan Origami Academic Society, and has presented several refereed technical papers on origami-math at mathematical and computer science professional meetings.