CHEST would like to thank the individuals listed below who served as reviewers for CHEST in 2011. Without their generous assistance, the Journal would not be able to function. The expert evaluations of manuscripts by these people is a primary reason that CHEST is one of the most respected journals in Medicine and Biology. We extend our appreciation. Because of production restraints, we have only listed those who completed reviews by mid-October 2011. Those who completed reviews after then will be listed next year.