"Say It Isn't So" was the third and final single to be released from Pop Idol runner-up Gareth Gates' second studio album, Go Your Own Way (2003). The single was released on 1 December 2003, peaking at number four on the UK Singles Chart. The video for the song was shot in South Africa.
^Say It Isn't So (UK CD2 liner notes). Gareth Gates. BMG, 19 Recordings, S Records. 2003. 82876583412.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
^Say It Isn't So (European CD single liner notes). Gareth Gates. BMG, 19 Recordings, S Records. 2003. 82876578062.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)
^Say It Isn't So (German mini-CD single liner notes). Gareth Gates. BMG, 19 Recordings, S Records. 2003. 82876 58831 2.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link)