2010 South American Rugby Championship "A"

The 2010 South American Rugby Championship was the 32nd edition of the two tiered competition of the leading national Rugby Union teams in South America.

In the first phase ("Copa Atilio Rienzi") four teams play to qualify to the final pool, with Argentina (holder) admitted directly. The first two were qualified, keeping the results of their matches, also for second round. Uruguay won the pool and Chile was the runner-up.