The genus Catenella collected from the different stations along the Kalegauk Island from August 2017 to January 2018 had been revised. Specimens were identified as Catenella caespitosa (Withering) Irvine in Parke & Dixon, Catenella nipae Zanardini and Catenella impudica (Montagne) J. Agardh with their morphological characters. Among them, Catenella caespitosa (Withering) Irvine in Parke & Dixon (= Catenella opuntia (Goodenough & Woodward) Greville) were new record for marine algae resources of Myanmar. The descriptive keys to the species of these algae were also provided. The distributional ranges of each species found along the coastal areas of the Kalegauk Island, the three Coastal Regions of Myanmar and worldwide regions of the oceans were recorded. Moreover, their potential uses and habitats were provided.