Neymar's having himself one helluva week -- raging at Carnival in Rio with a very famous, very attractive Brazilian singer.
The 27-year-old Paris Saint-Germain superstar had his arm around Anitta at the big parade at the Sambadrome Marques de Sapucai on Monday in Rio de Janeiro.
Unclear if the two are dating -- but they sure looked couple-ish at the Brazilian bash ... even planting kisses on each other's cheeks.
Neymar had been dating Bruna Marquezine for a while -- but they reportedly broke up in late 2018.