Ester Ståhlberg, née Elfving (February 17, 1870 – July 21, 1950) was a Finnish writer and educator and the first First Lady of Finland. She was the wife of president Kaarlo Juho Ståhlberg.
The daughter of Karl Oskar Elfving, mayor, and Jenny Nyman, she was born Ester Elfving in Vaasa, went on to study in Oulu and then continued with post-graduate studies in Helsinki. For a time, she taught Swedish.