Ban Dainagon Ekotoba(伴大納言絵詞The Tale of Great Minister Ban) is a late 12th century emakimono (handscroll painting) depicting the events of the Ōtemmon Conspiracy, an event of Japan's early Heian period. The painting, attributed to Tokiwa Mitsunaga of the Tosa school, is over 20m long and about 31.5cm tall.