Lindsay Lohan In 'Speed-the-Plow' -- LiLo Got A Job... On A London Stage

Lindsay Lohan is back to being a thespian ... she's landed a big time London stage gig.

That's right ... LiLo will actually be live on stage nightly, doing David Mamet's infamous play, "Speed-the-Plow." Beginning in September, Lohan will play the role of the secretary (there are only three roles in the whole play) a part that was played by Madonna in the original run back in 1988.

This particular play has a recent history of turmoil ... it's the same play Jeremy Piven bowed out of midway through its run ... claiming he got sick from eating too much sushi.