This paper reports on the construction of an Input-Output table for the economy of Morocco. The table is calibrated to the year 1990 and details the interactions between 133 primary, manufacturing, and service sectors, relying on a combination of a more aggregate table estimated by the Moroccan government and detailed data from official sources. This table will form the core of a detailed social accounting matrix (SAM) currently under construction as part of the same work programme. Ultimately, the SAM will be incorporated into a general equilibrium model, to be used cooperatively by the Development Centre, the Moroccan government, and the World Bank for trade and resource policy analysis. This report describes in detail the construction of the Input-Output table, presents the table in its entirety, and provides some preliminary multiplier estimates elucidating the links between Moroccan agriculture and the rest of the economy ...