Diary is the debut studio album by American rock band Sunny Day Real Estate, released on May 10, 1994.

[4] Diary was remastered and reissued in 2009, with bonus tracks "8" and "9" from their 1993 7-inch Thief, Steal Me a Peach and newly written liner notes.

The opening riff from "Round" was influenced by indie rock band Treepeople, while "48" and "Grendel" both feature guitar parts inspired by Fugazi.

[14] In a retrospective article about the 40 greatest emo albums of all time, Rolling Stone wrote that Diary "captures the vague inner-turmoil of Enigk's lyrics and propels those turbulent emotions to the heavens.

[...] But even if it isn't quite the top-to-bottom masterpiece its legions of imitators suggest, Diary still ranks as arguably the definitive '90s emo album, and an indispensable introduction to the genre.

[22] Ian Cohen from Pitchfork wrote that "it's the terse yet tender delivery of the lyrics from Jeremy Enigk that ultimately drew people in.