Montero Lamar Hill (born April 9, 1999), better known as Lil Nas X, is an American rapper, singer, and songwriter from Atlanta, Georgia. He is best known for his country rap breakout single "Old Town Road", which achieved viral popularity as part of the "Yeehaw Challenge" on the video sharing app TikTok. "Old Town Road" peaked at number one on the Billboard Hot 100 and was controversially removed from the Hot Country Songs after debuting at number 19.

Montero Lamar Hill graduated from Lithia Springs High School in Atlanta, Georgia.

Lil Nas X began his career as an internet personality on Twitter. He gained popularity through his Nicki Minaj fan account "NasMaraj", named after Nicki Minaj's actual surname of "Maraj" as well as New York rapper Nas. In 2015, Lil Nas X became known for his viral tweets and other fanpage, "FactsAboutNM". In 2017, his "NasMaraj" account gained attention for its interactive "scenario threads". These flash fiction-style threads were popularized on Twitter using the social media dashboard application, TweetDeck. Following reports and stories by media publications linking Montero to the "NasMaraj" account, he has however, for unknown reasons, denied that he ran the "NasMaraj" account.