This paper reports Sympetrum cordulegaster (Selys, 1883), Sympetrum depressiusculum (Selys, 1841) and Rhyothemis fuliginosa Selys, 1883, as three species of dragonflies newly recorded to Taiwan. Their characters, habit and habitat are briefly described. Also, their color photographs and keys to the species of the genera Sympetrum and Rhyothemis of Taiwan are provided for their identification.