Recognizing emotional expressions is central to understanding the feelings and intentions of other people. Little is known about how social anxiety affects the recognition of emotional expressions. Recent research finds a recognition advantage for happy expressions over negative expressions. In two experiments, social anxiety moderated the recognition advantage of happy faces. People low and high in social anxiety recognized sad faces (Experiment 1) and angry faces (Experiment 2) equally quickly, but people high in social anxiety took longer to recognize happy faces. Both groups showed a significant recognition advantage for happy faces, although the advantage was at least twice as large in the low social-anxiety group. The discussion focuses on mechanisms connecting social anxiety to face processing and on the role of expression recognition in other emotionalprocessing biases.