Who won Eurovision 1978?

A-Ba-Ni-Bi by Izhar Cohen, representing Israel, won Eurovision 1978 with 157 points.

Where was Eurovision 1978 held?

Eurovision 1978 was held at Palais des Congrès in Paris, France on 22 April 1978.

20 countries participated in Eurovision 1978.

Notable for being the first contest hosted by more than one presenter—and the first to include a male presenter since 1956—1978 also set a then-record with 20 participating countries, aided by Denmark’s first appearance since 1966 and Turkey’s return.
The native-language rule prompted Sweden’s Björn Skifs to begin in gibberish after nearly switching to English.
Israel won for the first time with “A-Ba-Ni-Bi,” the first Semitic-language winner and the only winning song conducted by a woman (Nurit Hirsh), while some Arab broadcasters reportedly cut transmission or misreported the result.
via Wikipedia

Denise Fabre, Léon Zitrone

Country	Artist · Song	Pos	Pts
Israel	Izhar Cohen A-Ba-Ni-Bi	1	157
Belgium	Jean Vallée L’amour ça fait chanter la vie	2	125
France	Joël Prévost Il y aura toujours des violons	3	119
Monaco	Corinne Sauvage Les jardins de Monaco	4	107
Ireland	Colm Wilkinson Born to Sing	5	86
Germany	Ireen Sheer Feuer	6	84
Luxembourg	Baccara Parlez-vous français ?	7	73
Greece	Tania Tsanaklidou Charlie Chaplin	8	66
Spain	José Vélez Bailemos un vals	9	65
Switzerland	Carole Vinci Vivre	9	65
United Kingdom	Co-Co Bad Old Days	11	61
Italy	Ricchi e Poveri Questo amore	12	53
Netherlands	Harmony ’t Is OK	13	37
Sweden	Björn Skifs Det blir alltid värre framåt natten	14	26
Austria	Springtime Mrs. Caroline Robinson	15	14
Denmark	Mabel Boom boom	16	13
Portugal	Gemini Dai li dou	17	5
Finland	Seija Simola Anna rakkaudelle tilaisuus	18	2
Turkey	Nazar Sevince	18	2
Norway	Jahn Teigen Mil etter mil	20	0