| Olexander Motsyk | |
| Office: | Ambassador of Ukraine to the United States |
| Term Start: | 2010 |
| Term End: | 2015 |
| President: | Viktor Yushchenko Viktor Yanukovych Oleksandr Turchynov Petro Poroshenko |
| Predecessor: | Oleh Shamshur |
| Successor: | Yaroslav Brisiuck |
| Office2: | Ambassador of Ukraine to Poland |
| Term Start2: | 2005 |
| Term End2: | 2010 |
| President2: | Viktor Yushchenko |
| Predecessor2: | Ihor Kharchenko |
| Successor2: | Markiyan Malskyy |
| Office3: | Ambassador of Ukraine to Turkey |
| Term Start3: | 1997 |
| Term End3: | 2001 |
| President3: | Leonid Kuchma |
| Predecessor3: | Oleksiy Chevkoplyas |
| Successor3: | Ihor Dolhov |
| Birth Date: | 3 May 1955 |
| Birth Place: | Volodymyrets Raion, Rivne Oblast, Ukrainian SSR, USSR |
| Party: | CPSU (until 1991) |
| Alma Mater: | Kyiv University |
| Occupation: | Jurist |
| Native Name Lang: | uk |
Olexander Motsyk (born 3 May 1955) is a Ukrainian diplomat. Ambassador Extraordinary and Plenipotentiary (1999)
07.1981-05.1985 — Third secretary, Consular Department, Ministry of Foreign Affairs of Ukraine
05.1985-04.1987 — Third, Second Secretary, Department of International Organizations, Ministry of Foreign Affairs of Ukraine
04.1987-09.1990 — Second, First secretary, HR Department, Ministry of Foreign Affairs of Ukraine
09.1990-04.1992 — First secretary, Directorate General for Treaties and Legal Affairs, Ministry of Foreign Affairs of Ukraine
04.1992-08.1995 — Second, First Secretary, Counselor, Permanent Mission of Ukraine to the UN, New York City
08.1995-11.1997 — Director General, Directorate General for Treaties and Legal Affairs, Ministry of Foreign Affairs of Ukraine
11.1997-11.2001 — Ambassador Extraordinary and Plenipotentiary of Ukraine to the Republic of Turkey
11.2001-07.2003 — Deputy State Secretary, Ministry of Foreign Affairs of Ukraine
07.2003-07.2004 — Deputy Minister, Ministry of Foreign Affairs of Ukraine
07.2004-02.2005 — First Deputy Minister for European Integration, Ministry of Foreign Affairs of Ukraine
02.2005-12.2005 — First Deputy State Secretary, First Deputy Head, Secretariat of President of Ukraine
01.2006[1] –06.2010[2] — Ambassador Extraordinary and Plenipotentiary of Ukraine to the Republic of Poland
06.2010[3] -04.2015[4] — Ambassador Extraordinary and Plenipotentiary of Ukraine to the United States of America
11.2010-04.2015 — Ambassador Extraordinary and Plenipotentiary of Ukraine to Antigua and Barbuda with Residence in the U.S.
07.2011-04.2015 — Permanent Observer of Ukraine at the Organization of American States
09.2011-04.2015 — Ambassador Extraordinary and Plenipotentiary of Ukraine to the Republic of Trinidad and Tobago with Residence in the U.S.
1993 — Reporter of the Sixth Committee (Legal Committee), 48th Session of the U.N. General Assembly
1994-1995 — Vice-Chairperson of the U.N. Ad Hoc Committee on the Elaboration of an International Convention Dealing with the Safety and Security of the United Nations and Associated Personnel
1995-2005 — Headed a number of Ukrainian delegations on bilateral and multilateral negotiations, and international forums.
2002-2005 — National Coordinator of Organization of the Black Sea Economic Cooperation (BSEC)
2004 — Agent of Ukraine before the International Court of Justice in the case concerning Maritime Delimitation in the Black Sea (Romania v. Ukraine)
2004-2005 — National Coordinator of GUAM (Regional economic organization of Georgia, Ukraine, Azerbaijan, and Moldova)
Author of numerous essays and articles in the field of International Law and International Relations. The main topics are: succession of States in respect of State property, archives and debts; the Maritime Law; BSEC; GUAM; bilateral Ukrainian-Turkish, Ukrainian-Polish and Ukrainian-American relations.