20 July - 14 August 1987, Vienna
- A/42/17 - Report of the United Nations Commission on International Trade Law on the work of its twentieth session
- A/CN.9/286 - Provisional agenda
- A/CN.9/287 - Report of Working Group on International Contract Practices on the work of its tenth session
- A/CN.9/288 - Report of the Working Group on International Negotiable Instruments on the work of its fifteenth session
- A/CN.9/289 - Report of the Working Group on the New International Economic Order on the work of its ninth session
- A/CN.9/290 - Draft Legal Guide on Drawing Up International Contracts for Constructions of Industrial Works
- A/CN.9/291 - International Procurement
- A/CN.9/292 - Legal implications of automatic data processing
- A/CN.9/293 - Training and assistance
- A/CN.9/294 - Status of conventions
- A/CN.9/295 - Bibliography of recent writings related to the work of UNCITRAL