Letters to Cleo were an alternative rock band from Boston, Massachusetts (although they originally started out as a ska band). The band was made up of members Michael Eisenstein, Kay Hanley, Stacy Jones, Greg McKenna, Scott Riebling, and Tom Polce. Their name came from the fact that Hanley had a pen pal named Cleo when she was younger, although the letters she wrote would often be returned. Hanley kept them in a box under her bed marked "Letters to Cleo", and happened to stumble across the box as the band was attempting to think of a name for itself.

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