Something Blue refers to a tradition about what brides should wear on their wedding day.

Something Blue may also refer to:

• Something Blue (novel), a 2006 book by Emily Giffin
• Something Blue, by Ann Hood 1991

• Something Blue (film), a movie based on the Emily Giffin novel
• "Something Blue" (Buffy the Vampire Slayer), a 1999 episode of the American television series Buffy the Vampire Slayer
• "Something Blue" (How I Met Your Mother), a 2007 episode of the American television series How I Met Your Mother

• Something Blue (Paul Horn album), a 1960 jazz album by Paul Horn
• Something Blue (Lightnin' Hopkins album), a 1967 blues album by Lightnin' Hopkins
• Something Blue (Chara album), a 2005 album by Chara
• Something Borrowed - Something Blue, a 1966 album by Gerry Mulligan
• "Something Blue", a 1962 Elvis Presley song, from the album Pot Luck

• Something old
• Something New (disambiguation)
• Something Borrowed (disambiguation)