Switzerland was represented at the Eurovision Song Contest 1973 with the song "Je vais me marier, Marie", written by Pierre Delanoë, and performed and composed by Patrick Juvet.

The Swiss Broadcasting Corporation (SRG SSR) held a national final on 17 January 1973 at 20:00 CET in Bern.

On 30 January, "Bitte glaub es nicht" by Monica Morell was disqualified, due to its songwriter, Pepe Ederer, not having Swiss citizenship.

At the close of voting, Switzerland had received 79 points in total; finishing in twelfth place out of eighteen countries.

All jury members were located at Villa Louvigny CLT studios, watched the show on television from there, and appeared on screen to confirm their scores after all songs were performed.