were reviewed by an excellent program committeeandtheir designatedreferees. Detailedemaildiscussionsprecededthe actual programcommittee meeting, which was held near the conference location in mid-July, 1999. The CP conferences have had two major directions: constraint satisfaction problems and programming with constraints. This year, the submission/acce- ancebreakdownwassubjectivelyestimatedat56/19and33/8,respectively,with the remaining ratio of 8/3 for application papers. The regional distribution of (?rst) authors for all submissions was 21 for France, 15 for Germany, 12 for USA, 7 for UK, 6 for Japan, 5 for Spain, 4 for Australia and Singapore, 3 each for Italy, Portugal, Sweden, and Switzerland, 2 for Canada and Belgium, and ?nally, one each for Greece, Finland, Hong Kong, Indonesia, Ireland, Korea,and the Netherlands.