Rugby union is a minor sport in Macau.
Macau has a national side, which competes in international competitions, and there is also Macau Rugby Club, which takes part in various Seniors (adult) competitions [1]. Macau also has a Junior (children's) club, called the Macau Bats Rugby Club, which competes in regional/international tournaments. Beach rugby and rugby tens tournaments have been held in the territory, and the game benefits from rugby's much stronger presence in neighbouring Hong Kong.
References
Rugby union in Macau Wikipedia(Text) CC BY-SA