Lindsay Lohan -- Suck It, Paris ... I Can Rock A DJ Booth Too!

Lindsay Lohan is battling Paris Hilton on a new front -- she's toying with the idea of becoming a DJ.

Lindsay was a hanger-on at Pier 94 in NYC Monday night ... studying 2 very famous spinners -- Diplo and Jillionaire of Major Lazer.

She wasn't spinning, but she was getting pointers from the 2 guys for hours.

TMZ broke the story ... Lindsay wants to resurrect her music career ... this time around focusing on electronic dance music.

Lindsay Lohan -- already one of the top 5 DJs in the world.