We held International Workshop on Multimodality in Multispace Interaction (MiMI), at Sunport Hall Takamatsu, Takamatsu City, Kagawa prefecture in Japan on December 1-2, 2011. The workshop was part of JSAI International Symposia on Artificial Intelligence (JSAI-isAI 2011) sponsored by the Japanese Society for Artificial Intelligence. All he papers collected here were presented at the workshop either as invited talks or as accepted papers . Incorporating discussions, comments, and questions, workshop presenters revised their papers and submit them to this proceedings . The submitted papers were peer-reviewed once again and three out of the eight papers were accepted in the end. Our special gratitude goes to the anonymous reviewers of the papers for their dedicated efforts to make very constructive and useful comments for the authors to make their papers more convincing and intriguing. Before we proceed to the papers themselves, we would like to introduce the readers to the aims and scope of MiMI 2011, by showing a piece of memo that we made in preparation of a proposal of the workshop to JSAI.