Aaro Hellaakoski was a Finnish poet whose work includes some of the earliest examples of modernism in Finnish literature.
Hellaakoski was born in Oulu. By profession he was a geographer conducting studies in physical geography and geomorphology and working as a school teacher of geography as well as a university teacher. As a geographer he published scientific studies on topics such as the geological history of lake Saimaa and the geological history of lake Puula and spent his summers in geomorphological fieldwork in the Finnish Lakeland for many years. He also wrote some geography textbooks for schools together with other scholars.