RESULTADOS DEL REFERÉNDUM DE LA CONSTITUCIÓN ESPAÑOLA DE 1978
| COMUNIDADES | SÍ | NO | BLANCO | NULO | ABSTENCIÓN |
| ANDALUCÍA | 91'85% | 5'48% | 2'07% | 0'58% | 30'49% |
| ARAGÓN | 88'09% | 6'72% | 4'65% | 0'52% | 26'45% |
| ASTURIAS | 88'58% | 8'39% | 2'13% | 0'88% | 38'21% |
| BALEARES | 89'46% | 4'82% | 4'87% | 0'83% | 29'81% |
| CANARIAS | 91'89% | 4'36% | 3'17% | 0'55% | 37'09% |
| CANTABRIA | 83'50% | 12'46% | 3'43% | 0'59% | 28'84% |
| CASTILLA Y LEÓN | 85'06% | 9'16% | 4'97% | 0'80% | 28'62% |
| CASTILLA-LA MANCHA | 84'32% | 11'78% | 3'11% | 0'77% | 26'18% |
| CATALUÑA | 90'46% | 4'61% | 4'23% | 0'68% | 32'09% |
| CEUTA Y MELILLA | 88'30% | 8'45% | 2'74% | 0'50% | 30'40% |
| COMUNIDAD VALENCIANA | 88'84% | 6,97% | 3'44% | 0'73% | 25'86% |
| EUSKADI | 69'11% | 23'53% | 5'74% | 1'60% | 55'34% |
| EXTREMADURA | 89'29% | 7'34% | 2'74% | 0'61% | 29'49% |
| GALICIA | 89'04% | 5'80% | 3'97% | 1'13% | 49'79% |
| LA RIOJA | 86'59% | 7'83% | 4'70% | 0'86% | 27'53% |
| MADRID | 86'14% | 10'11% | 3'02% | 0'71% | 27'76% |
| MURCIA | 90'77% | 6'21% | 2'43% | 0'57% | 28'56% |
| NAVARRA | 75'70% | 16'95% | 6'40% | 0'94% | 33'37% |