Table:
Name | Country | Ambassador since | Projects and activities they support | Link
Ara Abramyan | Russia | 15 July 2003 | Dialogue among Civilizations | [1]
Valdas Adamkus | Lithuania | 29 September 2003 | Construction of Knowledge Societies | [2]
Mehriban Aliyeva | Azerbaijan | 9 September 2004 | Promotion and safeguarding of intangible cultural heritage, especially oral traditions and expressions | [3]
Alicia Alonso | Cuba | 7 June 2002 | Promotion of ballet dancing (Programme of Intangible Heritage) | [4]
Ivonne A-Baki | Ecuador | 15 February 2010 | Peace | [5]
Patrick Baudry | France | September 1999 | Education of young people through seminars, science conferences and projects in the field | [6]
Pierre Bergé | France | 2 July 1993 | Campaign against HIV/AIDS, human rights, Cultural Heritage | [7]
Chantal Biya | Cameroon | 14 November 2008 | Education and Social Inclusion | [8]
Montserrat Caballé | Spain | 22 April 1994 | Fundraising for children in distress and victims of war | [9]
Pierre Cardin | France | 1991 | Promotion of the Chernobyl Program, creation of the Six Flags of Tolerance in 1995 and distribution in UNESCO Member States | [10]
Claudia Cardinale | Italy | March 2000 | Promotion of women's rights, especially for women in the Mediterranean; Environment issues | [11]
The Princess of Hanover | Monaco | 2 December 2003 | Protection of children and the family, empowerment of women and girls in Africa | [12]
Esther Coopersmith | United States |  |  | [13]
Cheick Modibo Diarra | Mali | 1998 | Promotion of education, especially in sciences, sustainable development in Africa | [14]
Miguel Angel Estrella | Argentina | 26 October 1989 | Promotion of Culture of Peace and tolerance through music | [15]
Vigdís Finnbogadóttir | Iceland | 1998 | Promotion of linguistic diversity, women's rights, education | [16]
Princess Firyal of Jordan | Jordan | 1992 | Promotion of the Education for All initiative, humanitarian actions, World Heritage, women's rights, especially Arab women | [17]
Ivry Gitlis | Israel | 1990 | Support of education and Culture of Peace and Tolerance | [18]
Nizan Guanaes | Brazil | 27 May 2011 |  | [19]
Christine Hakim | Indonesia | 11 March 2008 | Teacher education in South East Asia | [20]
Bahia Hariri | Lebanon | 17 November 2000 | Preservation of World Heritage, education, culture, women's rights and sustainable development in the Arab world | [21]
Vitaly Ignatenko | Russia | 2008 | Building of the capacities of the Russian language journalists and promotion of the free circulation of ideas in the Russian-speaking world | [22]
Jean Michel Jarre | France | 24 May 1993 | Protection of the environment (water, fight against desertification, renewable energies), youth and tolerance, safeguarding of World Heritage | [23]
Marc Ladreit de Lacharrière | France | 27 August 2009 |  | [24]
Princess Lalla Meryem of Morocco | Morocco | July 2001 | Protection of childhood and women's rights | [25]
Omer Zülfü Livaneli | Turkey | 20 September 1996 | Promotion of peace and polerance through music and promotion of human rights | [26]
Princess Maha Chakri Sirindhorn of Thailand | Thailand | 24 March 2005 | Empowerment of Minority Children and the Preservation of their Intangible Cultural Heritage | [27]
Jean Malaurie | France | 17 July 2007 | In charge of arctic polar issues, promoting environmental issues and safeguarding the culture and knowledge of the peoples of the Arctic | [28]
Keith Chatsauka-Coetzee | South Africa | 12 July 2012 |  | [29]
Grand Duchess María Teresa of Luxembourg | Luxembourg | 10 June 1997 | Education, Women's rights, microfinance and campaign against poverty | [30]
Rigoberta Menchu Túm | Guatemala | 21 June 1996 | Promotion of Culture of Peace, protection of rights of indigenous people | [31]
Oskar Metsavaht | Brazil | 27 May 2011 |  | [32]
Vik Muniz | Brazil | 27 May 2011 |  | [33]
Kitín Muñoz | Spain | 22 April 1997 | Protection and promotion of indigenous cultures and their environment | [34]
Ute-Henriette Ohoven | Germany | 1992 | UNESCO Special Ambassador for Education of Children in Need | [35]
Cristina Owen-Jones | Italy | 23 March 2004 | HIV/AIDS Prevention Education Program | [36]
Kim Phuc Phan Thi | Vietnam | 10 November 1994 | Protection and education for children, orphans and innocent victims of war | [37]
Susana Rinaldi | Argentina | 28 April 1992 | Street children, Culture of Peace | [38]
Yazid Sabeg | Algeria | 16 February 2010 |  | [39]
Sheikh Ghassan I. Shaker | Saudi Arabia | 1989 | Fundraising, children and women in need, victims of war, education, microfinance | [40]
Hayat Sindi | Saudi Arabia | 1 October 2012 | Promotion of science education for Arab women | [41]
Madanjeet Singh | India | 16 November 2000 | Founder of the South Asia Foundation, which promotes regional cooperation through education and sustainable development | [42]
Zurab Tsereteli | Georgia | 30 March 1996 | Cultural and artistic projects | [43]
Giancarlo Elia Valori | Italy | 2001 | Safeguarding of Intangible Heritage | [44]
Marianna Vardinoyannis | Greece | 21 October 1999 | Protection of childhood; promotion of cultural olympics; humanitarian relief for war victims | [45]
Milú Villela | Brazil | 10 November 2004 | Voluntary Action and Basic Education in Latin America | [46]
Forest Whitaker | United States |  |  | [47]
Sunny Varkey | India |  | Promoter of education | [48]
Laura Welch Bush | United States | 13 February 2003 | UNESCO Honorary Ambassador for the Decade of Literacy in the context of the United Nations Literacy Decade (2003–2012) | [49]

Question: which unesco goodwill ambassador is most known for the promotion of the chernobyl program?
Answer: Pierre Cardin