L. Onerva (real name Hilja Onerva Lehtinen, 28 April 1882 – 1 March 1972) was a Finnish poet. Onerva also wrote short stories and novels and worked as a translator and critic. In her works, she often dealt with tension in women's lives concerning freedom and commitment. She is also remembered for her complicated relationship with Eino Leino, as well as her marriage to the composer Leevi Madetoja.