Éanna Ní Lamhna (born 1950, in County Louth) is an Irish biologist, environmental consultant, radio and television presenter, author and educator. She is one of the best-known public figures in Ireland in the area of nature and the environment, and was listed as one of Ireland's "Influential 100" in 2012. She was president of the national environmental charity An Taisce (which has a statutory role in the planning process in Ireland) for five years in the 2000s. She was also President of the Tree Council of Ireland from 2012 to 2014 and currently serves as its vice-president.