Kukkia is a medium-sized lake in Finland. It is a part of a chain of lakes that begins from the lakes Lummene, Vehkajärvi and Vesijako at the drainage divide between the Kokemäenjoki and Kymijoki basins and flows westwards from there through the Lake Kuohijärvi into Lake Kukkia. From Kukkia the chain of lakes drains into lake Mallasvesi through the lakes Iso-Roine, Hauhonselkä and Ilmoilanselkä.