Digital transformation is crucial for firms to gain competitive advantages. While many studies focus on digital technologies, they take all digital technologies as the same and fail to explore the heterogeneity of digital technology. Motivated by this gap, this study explores the relationship between digital technology adoption diversity and knowledge sharing. Empirical findings from survey data of 123 large companies indicated that the association between digital technology adoption diversity and external knowledge sharing is inverted-U shaped; the association between digital technology adoption diversity and internal knowledge sharing is linear and positive. Moreover, environmental turbulence, including technological and policy turbulence, plays a moderating role on this relationship. This study expands the knowledge on digital transformation and knowledge management.