We report new records of four macroalgae species in the Eastern Tropical Pacific, specifically from the rocky reefs of northern Chocó, Colombian Pacific. Among them, three species of Rhodophyta are included— Crouania mageshimensis Itono, 1977; Monosporus indicus Børgesen, 1931; Jania articulata N’Yeurt & Payri, 2009—and one species of Chlorophyta— Ulothrix subflaccida Wille, 1901. The new records increase the knowledge of tropical marine algae in the Pacific, open the discussion about possible dispersal mechanisms, and recall the importance of conducting molecular studies to define phylogenetic and biogeographic aspects of macroalgae.