Israel-Contra relations in the 1980s offers a window into a secretive aspect of Israeli foreign relations, the complex U.S.-Israel relations, and Latin American history scarcely researched in the field of history. The paper focuses on Israel's supply of arms and expertise to the various U.S.-backed right-wing Nicaraguan rebel groups aiming to overthrow the Sandinista government in Managua, following the 1979 Nicaraguan Revolution. In view of the Iran Contra Affair, Israel’s role in arming and training the Contras received far less attention than their involvement in the arms for hostages deals with Iran. Always in the shadow of the Israel-Iran story, mentions of Israel-Contra relations received sporadic and partial treatment especially after the early 1990s. Working closely with American and Israeli documents, journalistic reports and personal accounts from people involved, I reconstruct the basic narrative by which the Israeli government helped supply the Contras. Alongside the official supply lines, I follow several Israeli citizens and operatives who likely traded in arms and provided training in Central America, including the Contras. The paper is a determined first step in understanding Israel’s supply networks in Latin America after the mid-1970s, their historical meaning and consequences.