This book constitutes the refereed proceedings of the 13th European Conference on Research and Advanced Technology for Digital Libraries ECDL 2009 held in Corfu Greece in September/October 2009. The 28 revised full papers and 6 revised short papers presented together with 2 panel description the extended abstracts of 20 revised poster and 16 demo papers were carefully reviewed and selected from a total of 181 submissions. The papers are organized in topical sections on services infrastructures interaction knowledge organization systems interfaces resource discovery architectures information retrieval preservation and evaluation.