The Marshall Mathers LP is the third studio album by American rapper Eminem. It was released on May 23, 2000, by Interscope Records, Aftermath Entertainment and Eminem's newly founded label, Shady Records in the United States, and on September 11, 2000, by Polydor Records in the United Kingdom. The album was produced mostly by Dr. Dre and Eminem, along with The 45 King, Bass Brothers, and Mel-Man. Released a year after Eminem's breakout album The Slim Shady LP, the record features more introspective lyricism including the rapper's response to his sudden rise to fame and controversy surrounding his lyrics.

The album sold more than 1.76 million copies in the US in the first week alone, becoming the fastest-selling studio album by any solo artist in American music history. In 2001, the album won the Grammy Award for Best Rap Album and was nominated for Album of the Year. The album was certified diamond by the Recording Industry Association of America in March 2011 for shipping 10 million copies in the United States. By May 2015, the album had sold over 11 million copies in the United States and more than 32 million copies worldwide.

A sequel to the album, The Marshall Mathers LP 2, was released on November 5, 2013.