Present study reveals the occurrence of 15 taxa of the genus Fissidens Hedw. from Assam. Eight species viz. Fissidens biformis Mitt., F. bryoides Hedw., F. ceylonensis Dozy. & Molk., F. curvatoinvolutus Dixon., F. flaccidus Mitt., F. griffithii Gangulee, Thwait ex Mitt., F. pellucidus Hornsch. and F. zollingeri Mont. are new to Assam, while F. crassinervis var. laxus (Sull. & Lesq.) A. Eddy., F. javanicus Dozy and Molk., F. orishae Gangulee, F. crenulatus Mitt. var. crenulatus and F. crispulus var. robinsonii (Broth.) Z. Iwats. & Z.-H. Li are new to North-East India.