Three dragonfly species, namely Sinolestes edita Needham (Synlestidae), Zyxomma obtusum Albarda (Libellulidae), and Macromidia ishidai Asahina (Corduliidae), are reported from Taiwan for the first time, and the genera Sinolestes and Macromidia are new to Taiwan as well. Morphological diagnosis of both sexes of the three species is provided, including descriptions of their habitats and ecological habits.