Jian ware or Chien ware is a type of Chinese pottery originally made in Jianyang, Fujian province. It, and local imitations of it, are known in Japan as Tenmoku (天目). The ware are simple shapes in stoneware, with a strong emphasis on subtle effects in the glazes. In the Song dynasty they achieved a high prestige, especially among Buddhist monks and in relation to tea-drinking. They were also highly valued in Japan, where many of the best examples were collected. Though the ceramic body is light-coloured, the wares, generally small cups for tea, bowls and vases, normally are glazed in dark colours, with special effects such as the "hare's fur" "oil-spot" and "partridge feather" patterns caused randomly as excess iron in the glaze is forced out during firing.

Stoneware is a broad term for pottery fired at a relatively high temperature. A modern definition is a vitreous or semi-vitreous ceramic made primarily from stoneware clay or non-refractory fire clay. End applications include tableware, decorative ware such as vases.