Genjiyama Tsunagorō (Japanese: 源氏山 綱五郎, born Hanroku Seno (瀬野 半六, Seno Hanroku), 1786 – April 8, 1844) was a Japanese professional sumo wrestler from Higashimurayama District, Dewa Province (now Tendō, Yamagata Prefecture).

He was given the shikona, or ring name, Nawabari Tsunaemon (縄張 綱右エ門) and reached sumo's highest division, makuuchi, in November 1814.

In October 1825, he was promoted to ōzeki, taking advantage of the retirement of the dominant Kashiwado, which left the ranking unbalanced.

[3] His ōzeki career was mixed, however, winning a sufficient number of victories without being able to establish himself as a dominant wrestler.

He was eventually demoted in the rankings in favour of Ōnomatsu (then called Koyanagi), a dominant wrestler who had already won the equivalent of two tournaments.