Label: J Records – 82876-55712-1
Format: 2 x Vinyl, LP, Album, Gatefold Sleeve
Country: US
Released: 2003
Genre: Funk / Soul
Style: Neo Soul, Contemporary R&B

The Diary of Alicia Keys is the second studio album by American singer Alicia Keys. It was released on December 2, 2003, by J Records. The album was recorded at several recording studios, and production was handled primarily by Keys with contributions from Kanye West and Kerry Brothers Jr., who described it as "an R&B album".

Upon its release, The Diary of Alicia Keys received generally positive reviews from music critics. The album debuted at number one on the US Billboard 200 chart, selling 618,000 copies in its first week. It became Keys' second consecutive number-one debut in the United States and spawned three top-ten singles. The Diary of Alicia Keys earned Keys three Grammy Awards at the 47th Annual Grammy Awards. The album has sold over five million units in the United States and over eight million copies worldwide.