Ilmari Kianto (7 May 1874 Pulkkila, Northern Ostrobothnia - 27 April 1970 Helsinki), also known as Ilmari Calamnius and Ilmari Iki-Kianto, was a Finnish author. He is best known for his books Punainen viiva ("The Red Line", published 1909) and Ryysyrannan Jooseppi (published in 1924). In his books, he describes people and living at Suomussalmi municipality in Kainuu region. Composer Jean Sibelius used Kianto's poem 'Lastu lainehilla' (Driftwood) as the lyric for the beautiful last of his Seven Songs, Op.17 (1902).