一国方案（英语：One-state solution），或是类似的双重国家方案（英语：binational solution），是对于以巴冲突的政治解决方案之一。这个方案的支持者，主张将以色列、约旦河西岸及加萨走廊，统一成为单一国家，也就是以色列。在以色列之下，这三大区域的居民，不分族群，无论是犹太人，或是巴勒斯坦人，都拥有相同而平等的公民权与各项权利。

这个方案在学术界被讨论很久，但是基于政治现实，以及民族主义情绪，目前一国方案得到的政治支持，并不如两国方案那么多。

The one-state solution and the similar binational solution are proposed approaches to resolving the Israeli-Palestinian conflict. Proponents of a binational solution to the conflict advocate a single state in Israel, the West Bank and the Gaza Strip, with citizenship and equal rights in the combined entity for all inhabitants of all three territories, without regard to ethnicity or religion. While some advocate this solution for ideological reasons, others feel simply that, due to the reality on the ground, it is the de facto situation.