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。

Isratin (Hebrew: יִשְׂרָטִין, Yisrātīn; Arabic:إسراطين‎, Isrātīn), also known as the bi-national state (Hebrew: מדינה דו-לאומית, medina du-le'umit), is a term descriptive of a unitary, federal or confederate Israeli-Palestinian state encompassing the present territory of Israel, the West Bank and the Gaza Strip. Depending on various points of view, such a scenario is presented as a desirable one-state solution to resolving the Israeli–Palestinian conflict, or as a calamity in which Israel would ostensibly lose its character as a Jewish state and the Palestinians would fail to achieve their national independence within a two-state solution. Increasingly, such scenario is being discussed not as an intentional political solution –desired or undesired –but as the probable, inevitable outcome of the continuous growth of the Jewish settlements in the West Bank and the apparently irrevocable entrenchment of the Israeli occupation there since 1967.