The Centenary March (Romanian: Marșul Centenarului) or Centenary March of the Great Union (Romanian: Marșul Centenarului Marii Uniri) was a civic demonstration organized by George Simion and various non-governmental organizations from Romania and Moldova, known under the collective name "Alliance for the Centenary". It started in Alba Iulia (Romania) on 1 July 2018 and ended in Chișinău (Moldova) on 1 September 2018. Its participants, both Moldovans and Romanians, targeted 300 cities and villages, passing through several points significant for the Great Union (Bessarabia, Bukovina and Transylvania).