Mapai (basa Ibrani: מפא" י, akronim kanggo Mifleget Poalei Eretz Yisrael (basa Ibrani: מפלגת פועלי ארץ ישראל), lit. Workers' Party of the Land of Israèl) ya iku parté pulitik sayap kiwa ana Israèl. Mapai uga parté kang dominan ana pulitik Israèl, nganti pungkasé nggabung karo Alignment ana partengahan 1960an. Parté iki uga awal saka Parté Labor. Kaya parté pulitik Israèl liyané, Mapai ya iku singkatan saka Mifleget Poalei Eretz Yisrael (basa Ibrani: מפלגת פועלי ארץ ישראל), kang artiné Parté Lemah Pakarya Israèl.