Brazil has no shortage of great asses, but they do crown their best ... and 2016 has its winner.

Meet Erika Canela ... all of Erika Canela. The 20-year-old model took 1st place last month at Miss Bumbum -- a Brazilian pageant where more than 17 million people vote. She's also the first black woman to win in its 6 year run.

Welp ... easy to see why she takes the cake.