Itkonen is a Finnish surname. Notable people with the surname include:
Ensio Itkonen (1926–2010), Finnish driving instructor and traffic educator Esa Itkonen (born 1944), Finnish linguist Rieti Itkonen (1889–1951), Finnish lawyer, journalist, and politician T. I. Itkonen (1891–1968), Finnish historian and linguist Kale Itkonen (kmoe) (born 2004), Canadian musician