IJCAI-2011 Workshop on Social Choice and Artificial Intelligence Edith Elkind, Ulle Endriss, Jérôme Lang Abstract: These are the informal proceedings of the IJCAI Workshop on Social Choice and Artificial Intelligence, held in Barcelona on 16 July 2011 as part of the workshop programme of the 22nd International Joint Conference on Artificial Intelligence (IJCAI-2011). This volume collects the 19 papers accepted for presentation by the programme committee. Keywords: computational social choice