"Echo" is the third official single from American R&B singer R. Kelly's 2009 album, Untitled. The song is noted for its use of yodeling.
Mother Jones gave a mixed review, calling the song a "typical R. Kelly hook" but stating that "R. Kelly is somehow endearing." The Oregonian gave a positive review, praising the yodeling. Pitchfork also gave a positive review, saying that the "track's atmosphere is a gorgeous blanket of appropriately airy beauty."