Fourteen new records of marine algae from the Canary Islands are reported: Apoglossum ruscifolium (Turner) J. Agardh, Haraldia lenormandii (Derbes et Solier) J. Feldmann, Lomentaria subdichotoma Ercegovic, Myriogramme minuta Kylin, Predaea pusilla (Berthold) J. Feldmann, Rhodymenia ardissonei J. Feldmann, Cutleria chilosa (Falkenberg) Silva, Carpomitra costata (Stackhouse) Batters, Dictyopteris delicatula Lamouroux, Rosenvingea intricata (J. Agardh) Borgesen, Saccorhiza polyschides (Lightfoot) Batters, Sphacelaria plumula Zanardini, Cladophora hutchinsiae (Dillwyn) Kutzing and Halimeda discoidea Decaisne. Data concerning morphology, phenology, ecological conditions and geographical distribution of the species are presented.