Diary of a Sinner: 1st Entry is the debut album by rapper Petey Pablo, released in 2001. The album debuted at No. 25 on the Billboard 200 chart with first-week sales of over 100,000 copies in the US and was certified Gold by the RIAA. It was nominated for Best Rap Album at the 45th Annual Grammy Awards, but lost to Eminem's album The Eminem Show.