Switzerland was represented at the Eurovision Song Contest 1978 with the song "", composed by Alain Morisod, with lyrics by Pierre Alain, and performed by . The Swiss participating broadcaster, the Swiss Broadcasting Corporation (SRG SSR), selected its entry for the contest through a national final.
=== === The Swiss Broadcasting Corporation (SRG SSR) held a national final to select its entry for the Eurovision Song Contest 1978. The broadcaster received 95 total song submissions (53 in French, 29 in German, and 13 in Italian). In October 1977, a jury internally shortlisted 14 songs before ultimately selecting seven to take part in the selection, with five being performed in French and two in Italian. None of the songs in the selection were performed in German. Among the participants was Piera Martellâ who represented .
Swiss German and Romansh broadcaster (SF DRS) staged the national final on 18 January 1978 at 21:05 CET in Zürich. It was presented by Christian Heeb, with conducting the orchestra. Marie Myriam â who won Eurovision for â and the made guest appearances.
The voting consisted of regional public votes which were sent to the three divisions of SRG SSR (DRS, TSR, TSI: German, French, and Italian speaking, respectively), a press jury, and a jury of music experts. Applications for viewers from Switzerland and Liechtenstein to join the regional juries were sent via postcard until 10 January, and 50 viewers from each canton were randomly selected to cast their votes to their broadcaster divisions via phone call. The winner was the song "", composed by Alain Morisod, with lyrics by Pierre Alain, and performed by .
At the Eurovision Song Contest 1978, held at the in Paris, the Swiss entry was the ninth entry of the night following the and preceding . The Swiss conductor at the contest was . At the close of voting, Switzerland had received 65 points in total; finishing in ninth place out of twenty countries.
Each participating broadcaster assembled a jury panel with at least eleven members. The jurors awarded 1-8, 10, and 12 points to their top ten songs. Until , the votes were given in the order the awarded songs were performed in, rather than in ascending numerical order.