The Lexus LX is a full-size luxury SUV sold by Lexus, the luxury vehicle division of Japanese automaker Toyota. Three generations of the LX have been produced, all based heavily on the long-running Land Cruiser series of SUVs. The first generation LX 450 debuted in 1996 as Lexus' first entry into the SUV market. Its successor, the LX 470, premiered in 1998 and was produced through 2006. The latest third generation Lexus LX 570 debuted at the New York International Auto Show in April 2007 as a complete redesign for the 2008 model year.

The latest two generations of the Lexus LX have featured a V8 engine powertrain, a welded steel unibody shell combined with a full-size steel ladder frame (body on frame construction), and the capacity to seat eight passengers. The LX is Lexus' largest and most expensive luxury utility vehicle, sized above the GX 470 and RX 350/RX 400h series of SUVs.