"A Foreign Affair" is a song written and produced by Australian group Client Liaison, featuring Tina Arena.

The song was released on 30 August 2017 as the fourth and final single from Client Liaison's debut studio album Diplomatic Immunity (2016).

[3] In July 2017, the group announced the A Foreign Affair World Tour, which began in August 2017.

[5][6] The song includes a lyrical allusion to Arena's own hit single "Sorrento Moon".

[7] Kyle Butcher from Tone Deaf wrote about the song "Soft balladry casts the song back into the mid-1980s synth-pop that bred artists like Eurogliders and Pseudo Echo, offering a chance for the melody and lyrics to tell the tale of a mile high foreign affair".