The Best Day is the fourth solo studio album by the American alternative rock musician Thurston Moore, released on October 20, 2014 on Matador Records. The album cover is a photograph of Moore's mother, Eleanor Moore, circa 1940 and a photograph of Moore's parents as artwork.

Thurston Joseph Moore is an American guitarist, singer and songwriter best known as a member of the rock band Sonic Youth. He has also participated in many solo and group collaborations outside Sonic Youth, as well as running the Ecstatic Peace! record label. Moore was ranked 34th in Rolling Stone's 2004 edition of the "100 Greatest Guitarists of All Time".