| 19 | 66/19/Euratom: Council Decision of 14 June 1966 approving a third amendment to the Statutes of the 'Kernkraftwerk Rheinisch-Westfälisches Elektrizitätswerk-Bayernwerk GmbH' Joint Undertaking | 14 Jun 1966 |
| 161 | 66/161/EEC: Council Decision of 28 February 1966 instituting a procedure for consultation in respect of transport infrastructure investment | 28 Feb 1966 |
| 399 | 66/399/EEC: Council Decision of 14 June 1966 setting up a Standing Committee on Seeds and Propagating Material for Agriculture, Horticulture and Forestry | 14 Jun 1966 |
| 556 | 66/556/EEC: Commission Decision of 23 September 1966 on the aid instituted by the Government of the French Republic for the purchase of aircraft (Only the French text is authentic) | 23 Sep 1966 |
| 740 | 66/740/EEC: Council Decision of 22 December 1966 on Community aid for the Italian Republic towards the granting of assistance to sulphur mine workers affected by dismissal and of a number of scholarships for their children | 22 Dec 1966 |