There were only 9 taxa of Chamaesiphon A. Braun & Grunow, reported so far from India. This includes 6 species and 3 varieties. In the present study, two species of genus Chamaesiphon i.e. C. amethystinus and C. polonicus were reported from the Eastern Himalayas, as new records from India. Further, a taxonomic key to the Indian taxa of the genus Chamaesiphon along with their distribution in India as well as the globe have been provided. The taxonomic status of two endemic species was also evaluated. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)