Kleenex Girl Wonder (or Kleenexgirlwonder or Kleen Ex-Girl Wonder in Japan) is an indie rock band, originally from the suburbs of Chicago but now based in New York City.

The band's central and sole consistent member since its inception is Graham Smith. The original backing band consisted of neighborhood friends from his hometown of Downers Grove, Illinois. This lineup consisted of Adam Blake (guitar), Rafeeq Hasan (bass), Quinn Goodwillie (guitar), Christian Goodwillie (bass) and Jeff Giba (drums).