This is a manual for evaluation of development interventions. It is intended primarily for Sida staff, but may also be useful to Sida’s co-operation partners and independent evaluators engaged to evaluate activities supported by Sida.It consists of two main parts. The first deals with the concept of evaluation, roles and relationships in evaluation, and the evaluation criteria and standards of performance employed in development co-operation. The second is a step-by-step guide for Sida programme officers and others involved in the management of evaluations initiated by Sida or its partners. The manual adheres to the terminological conventions recommended by the OECD/DAC Glossary of Key Terms in Evaluation and Results-Based Management, which is included as an annex. Yet, in some cases, it also takes notice of alternative usage. For Sida evaluation managers who must agree on conceptual matters with cooperation partners and professional evaluators, some knowledge of the variability of international evaluation terminology can be very useful. Two limitations should be noted. One is that this is a handbook for evaluation managers rather than evaluators. A second limitation is that it focuses on matters that are common to all or most kinds of development evaluations.