The macro algal community was sampled at fifteen sites in the Cayos Cochinos Archipelago, Honduras. The results include 38 species of Chlorophyta, 12 species of Phaeophyta, 58 species of Rhodophyta, 5 species of Cyanophyta and 4 species of Spermatophyta. Coralline algae were only incidentally noted. All of the species collected have been reported for other areas of the Caribbean with the exception of the questionable Flahaultia and possibly a new species of Botryocladia and Rhodymenia.