2019 Grammys A-List After-Parties Go Head-to-Head ... Who's Got the Biggest Fish?

After the 2019 Grammy Awards, all the biggest names in music dispersed to various after-parties -- the question ... whose party was the most poppin'???

At least five different get-togethers were going down at the same time late Sunday night all over L.A. Republic Records had a shindig, as did Universal and Sony. Even Mark Ronson threw something himself ... and don't forget the LiveXLive bash.

Each party had its fair share of big fish from the awards ceremony. Republic was able to lure a diverse crowd in Zedd, Paris Jackson, Joe Jonas and Sophie Turner as well as Scottie Pippen. UMG's rager featured Earth, Wind & Fire, Eve, Kacey Musgraves and Terry Crews ... and Sony was able to bring in folks like Usher, John Mayer, Maren Morris and Miguel.

Ronson's party was a who's who too -- artists like Lady Gaga and Katy Perry swung by. And, the LiveXLive function had Charli XCX, Rick Ross and Sheck Wes there.

From the looks of these lineups -- we might have to give it to Republic ... or Universal ... or Sony. Or all of them, actually.

Click here for info about our online advertising practices.