The Israel Defense Forces (IDF) (Hebrew: צְבָא הַהֲגָנָה לְיִשְׂרָאֵל‎  Tzva HaHagana LeYisra'el lit. Defense Army for Israel commonly known in Israel by the Hebrew acronym Tzahal (צה"ל), are Israel's military forces, comprising the ground forces, air force and navy. It is the sole military wing of the Israeli security forces, and has no civilian jurisdiction within Israel. The IDF is headed by its Chief of General Staff, the Ramatkal, subordinate to the Defense Minister of Israel; the current Chief of Staff, since 2007, is Lieutenant General Gabi Ashkenazi.

The Israel Defense Forces differs from most armed forces in the world in many ways, including the conscription of women, and the structure, with close relations between the ground forces, air force and navy. Since its founding, the IDF has striven to be a unique army fitting Israel's specific requirements. In 1965, the Israel Defense Forces was awarded the Israel Prize for its contribution to education. The IDF uses several technologies developed in Israel, many of them made specifically to match the IDF's needs, such as the Merkava main battle tank, advanced Hi-Tech weapons systems, and the Galil and Tavor assault rifles. The Uzi submachine gun was used by the IDF until December 2003, ending a service that began in 1954. The IDF also has close military relations with the United States, including development cooperation, such as on the F-15I jet, THEL laser defense system, and the Arrow missile defense system.