On 12 December, the first Honorary Consulate of Lithuania in Iran was opened in Tehran. The consulate is headed by Mohsen Karimi Tabbasi, President at Yasin Group of Companies. This is the first diplomatic representation of Lithuania in Iran since the establishment of diplomatic relations with the Persian Empire in 1930.
On 27 November, the Ambassador of Lithuania Arvydas Daunoravičius presented his letters of credence to Ahmed Aboul Gheit, Secretary-General of the League of Arab States.
The Embassy of Lithuania in Washington hosted a debate on strengthening of ties between Western democracies and Russian civil society on 7 November 2017.
On November 1, 2017 Renatas Norkus, Ambassador of Lithuania to the Court of St James's, presented his Credentials to Her Majesty Queen Elizabeth II.
On 27 October in Gaborone, the capital city Botswana, the Ambassador of Lithuania South Africa, Angola and Namibia Sigutė Jakštonytė presented her letters of credence to the President of Botswana Seretse Khama Ian Khama.
On 2 October, the European Centre of Excellence for Countering Hybrid Threats was officially opened in Helsinki, Finland.
Ambassador of the Republic of Lithuania to Ireland, Egidijus Meilūnas, presented his Letters of Credence to the President of Ireland, Michael Daniel Higgins, on 21 September 2017.
On 21 September 2017, Ambassador of Lithuania to the Holy See and to the Maltese Order, Petras Zapolskas, presented his Credential Letters to Pope Francis. At a private meeting, Pope Francis inquired about the situation and social life of Lithuanian believers and about emigration which continues to be a problem despite the economic indicators of Lithuania pointing to its positive economic development.
On 19 September, the Ambassador of Lithuania to the Holy See and the Sovereign Order of Malta Petras Zapolskas presented his letters of credence to the Lieutenant of the Grand Master of the Sovereign Order of Malta Giacomo Dalla Torre del Tempio di Sanguinetto.
On 14 September, the Permanent Representative of Lithuania to the Food and Agriculture Organization of the United Nations (FAO), Ambassador Ričardas Šlepavičius presented his letters of credence to José Graziano da Silva, Director General of FAO.
On 8 September, the Ambassador Extraordinary and Plenipotentiary of Lithuania to Italy Ričardas Šlepavičius presented his letters of credence to the President of the Italian Republic Sergio Mattarella.
On 6 September, the Ambassador of Lithuania to the Organization for the Prohibition of Chemical Weapons (OPCW) Vidmantas Purlys presented his letters of credence to the Director-General of the Technical Secretariat of the OPCW Ahmet Üzümcü.
On 6 September, the Ambassador of Lithuania to the Netherlands Vidmantas Purlys presented his letters of credence to the King of the Netherlands Willem-Alexander.
On 5 September, the Ambassador of Lithuania to Estonia Giedrius Apuokas presented his letters of credence to the President of Estonia Kersti Kaljulaid.
The new Honorary Consulate of Lithuania was opened on 1 September in Klagenfurt, the capital of the state of Carinthia in Austria. The Honorary Consulate is headed by the lawyer Ulrich Salburg.