Participants in the 2005 Graduate Student Combinatorics Conference: keynote speakers: Richard Ehrenborg, University of Kentucky Margaret Readdy, University of Kentucky everyone else: Jackie Anderson, University of Wisconsin at Madison Drew Armstrong, Cornell University Suman Balasubramanian, Mississippi State University Andy Berget, University of Minnesota Adam Berliner, University of Wisconsin at Madison John Bowman, University of Wisconsin at Madison Abra Brisbin, Carleton College Pat Byrnes, University of Minnesota Mahir Can, University of Pennsylvania Louis Deaett, University of Wisconsin at Madison Theodora Dordea, California State University at Hayward Brian Drake, Brandeis University Dan Drake, University of Minnesota Jennifer Galovich, St. John's University John Hall, University of Minnesota Geir Helleloid, Stanford University Ghaith Hiary, University of Minnesota Ashraf Ibrahim, Texas A&M University Ning Jia, University of Minnesota Sangwook Kim, University of Minnesota Keith Kohrs, University of Kentucky Dimitrije Kostic, Texas A&M University Adam Marcus, Georgia Institute of Technology Jeremy Martin, University of Minnesota Ezra Miller, University of Minnesota Sarah Mason, University of Pennsylvania Molly Maxwell, University of Minnesota Abigail Mitchell, University of Notre Dame Walter Moreira, Texas A&M University Matthew Morin, University of British Columbia Tricia Muldoon, University of Kentucky Murat Mut, University of Minnesota Darren Neubauer, University of Wisconsin at Madison Magalie Page, Universite du Quebec a Montreal Brendan Rhoades, University of Michigan Gagan Sekhon, California State University at Hayward Naeem Sheikh, University of Illinois at Urbana-Champaign Michael Slone, University of Kentucky Alan Stapledon, University of Michigan Phillip Sternberg, University of California at Davis Jessica Striker, University of Minnesota Muge Taskin, University of Minnesota Rajeev Walia, Michigan State University Michael Weimerskirch, University of Minnesota Emilie Wiesner, University of Wisconsin at Madison Bob Willenbring, St. John's University