"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). The video was released on 29 August 2017 with Arena saying "It's been a lot of fun working with Client Liaison, from recording the song last summer and to crashing their set at Splendour, this clip ties it all together nicely! Grab a gin & tonic and get ready for take-off." At the J Awards of 2017, the song won the Australian Video of the Year.