The Third International Workshop on “Data Extraction and Object Search” (DEOS 2013) will take place as a satellite event of BNCOD, on July 7th, 2013. The goal of the workshop is to present and discuss ongoing work on data extraction and object search for products, events, reviews, and other types of structured data on the web. Nilesh Dalvi (Facebook) and Roberto Navigli (Rome, La Sapienza) are confirmed as keynote speakers.