Diego "Pato" Oliveira, born October 2, 1998, is a Brazilian jiu-jitsu black belt competitor from Manaus, Brazil. Representing PSLPB Cicero Costha, Pato is one of the top-ranked featherweight grapplers in the world today. A gi and no-gi competitor, his titles in 2021 include IBJJF World no-gi champion, Pan champion and Pan no-gi champion.