While the psychological benefits of social support are well-established, it is also clear that for many socially anxious individuals, engaging with face-to-face social networks is problematic. This research examined whether social support derived from an online social network (Facebook) had incremental value in predicting subjective well-being over and above offline social support in socially anxious and non-socially anxious individuals. Individuals with high (N=105) and low (N=194) social anxiety completed measures of perceived social support, perceived social support derived from Facebook, and subjective well-being. For the high social anxiety group, Facebook social support explained a significant amount of additional variance in subjective well-being, with offline social support failing to contribute significantly to the model. For the low social anxiety group, Facebook social support did not explain any variance in well-being over and above offline social support. Possible implications of the utility of Facebook for socially anxious individuals are discussed.