"Lather", a song by Grace Slick, performed by US rock band Jefferson Airplane, is the opening track on the 1968 album Crown of Creation and was the B-side for the single of the same name. Slick says she wrote the song for the drummer of the group Spencer Dryden, who was at the time twenty-nine years old and her boyfriend.^[1] The lyrics tell of a boy who stays as young as possible until one day when he is shattered by having finally to grow up.

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The band performed the song during their 1968 appearance on The Smothers Brothers Comedy Hour.^[2]

Upon Dryden's death in 2005, Slick and other band members wrote tributes to Dryden that appeared on the group's website. Slick's ends with the first lines of the song: "Lather was 30 years old today, they took away all of his toys."^[3]

• Tom Constanten performs a solo piano instrumental cover of this song on his album Morning Dew.^{[citation needed]}
• Small Potatoes performed as part of a medley "Lather Danish Misfortune Mad Mouth" on their album Waltz of the Wallflowers (A Dysfunctional Duet).^{[citation needed]}