Ryadam was a form of Angosian martial arts.

According to Roga Danar's service record, Primehadar Davgrant made a recommendation for Danar to be trained in advanced Ryadam martial arts. He subsequently completed the training.

In 2366, this individual was mentioned in Danar's military service records, which were accessible to the crew of the USS Enterprise-D via the Angosian senatorial database. (TNG-R: "The Hunted", okudagram)

This martial arts is named after Ryan Adams, Director of Multimedia at CBS Television Distribution, who worked on the remastered TNG project.