The Six Ancient Kilns (六古窯 Rokkoyō) is a category developed by Koyama Fujio (小山富士夫 1900–1975) in the post-war period to describe the most noteworthy ceramic kilns of Japan.
The six kilns are:
The Okayama Prefectural Bizen Ceramic Museum held an exhibition in 2001 about the six kilns.