Kamegawa Ueekata Seibu (亀川 親方 盛武, 1808 – 13 November 1880), also known by the Chinese-style name Mō Inryō (毛 允良), was a politician and bureaucrat of Ryukyu Kingdom.

Kamegawa was selected as a member of the Sanshikan in 1871, but was forced to retire by Japan in the next year because he was strongly pro-Chinese.

After Ryukyu was annexed by Japan in 1879, Kamegawa Seibu became the chief leader of anti-Japanese factions.

He sent his grandson Kamegawa Seitō (亀川 盛棟, also known as Mō Yūkei 毛 有慶) to Fuzhou to request China negotiate it with Japan.

In the next year, Seitō came back to Shuri and spread rumors that Chinese troops would come to liberate Ryukyu soon.