The 9th Russian Summer School in Information Retrieval (RuSSIR 2015) will be held on August 24-28, 2015 in St. Petersburg, Russia. The school is co-organized by the Internet Studies Lab at the National Research University Higher School of Economics in St. Petersburg (http://linis.hse.ru/en/) and the Russian Information Retrieval Evaluation Seminar (ROMIP, http://romip.ru/en/). RuSSIR 2015 will have an additional focus on social network analysis and graph mining.