The bryophyte flora of the three islands Signilskär, Enskär and Ängeskär in Hammarland commune, Åland, were studied, as well as the flora of two areas in Lemland commune: in Norrby (Raskholmen and Segelgrundet) and in Nåtö Nature Reserve. The studied localities are described and lists of their bryophyte floras provided. One species, Tortella rigens, was new to Finland and was found at three localities on Signilskär and on neighbouring island Enskär. In latest Finnish red list Pseudocalliergon turgescens is listed as extinct in Åland, however, a new locality for this species in Signilskär we found.