This note provides information on the status of submission of third national communications from Parties included in Annex I to the Convention (Annex I Parties) and on the reviews of those national communications coordinated by the secretariat. In accordance with decision 11/CP.4, third national communications should have been submitted to the secretariat by 30 November 2001. The Conference of the Parties, by its decision 33/CP.7, requested the secretariat to apply the procedures for the review of third national communications, including in-depth reviews, as defined in decisions 2/CP.1 and 6/CP.3. At the time of the preparation of this note the secretariat had received national communications from 38 Annex I Parties; 13 of these communications were submitted on or before the due date. All the national communications received so far have been posted on the UNFCCC web site. The secretariat conducted the in-depth reviews of third national communications between March 2002 and November 2004. To date, 34 Parties have been visited by international teams of experts. Reports on all in-depth review visits have been finalized and published on the web site of the secretariat