Trade relations were established under the Přemyslid dynasty when cloth, canvas and hats were imported from Bohemia.
Czech-Romanian relations intensified during the war against the Turks under the reign of Michael the Brave. The Romanian ruler was given a domain in Silesia in 1599 byKing Rudolf II and visited Prague in 1601. He was lodged at the Three Ostriches Inn (U tří pštrosů) which can still be seen today at the foot of the Charles Bridge. In those very days, the Flemish Egidius Sadeler, court engraver of Rudolf II, made the famous portrait of Michael the Brave.
In the period 1823-1863 Czech settlers established nine Czech settlements in Banat, six of which are still standing. They arrived in Banat in three waves:1823, 1827-28 and 1863.
The two nations share the ideals of the 1848 revolution.
October 1917: future President of Czechoslovakia Tomáš Garrigue Masaryk pays visit to Iaşi at the invitation of King Ferdinand of Romania.
February 8, 1919: university professor Constantin Isopescu-Grecul is appointed to represent the Romanian government in the Czechoslovak government.
April 6, 1919:Bohumil Čermák is appointed as the Czechoslovak government representative in the Romanian government, and at the same time as the military attaché.
September 1, 1919 is the date when diplomatic relations between the two countries were established according to Czechoslovakia (the day when the Romanian side approved Bohumil Čermák as the Ambassador to Romania).
January 30, 1920 is considered by the Romanian party as the date of establishment of diplomatic relations between the two countries (the day when Bohumil Čermák, the first Czech Ambassador to Bucharest, presented his credentials to King Carol II of Romania).
August 6, 1920: career diplomat Constantin Hiott is appointed a special envoy and minister plenipotentiary of Romania in Prague.
April 23, 1921: the Czechoslovak-Romanian Military Alliance Agreement is signed in Bucharest. The agreement stipulating mutual military assistance was signed by the Foreign Ministers of Romania and Czechoslovakia, Take Ionescu and Edvard Beneš.
End of August 1921: the first meeting of the representatives of the Little Entente and of Yugoslavia takes place.
September 1923: Prime Minister Ion C. Brătianu visits Czechoslovakia.
September 24, 1925: Crown Prince Carol II visits Prague.
October 1936: King Carol II visits Prague.
December 1936: Czechoslovak President Edvard Beneš visits Romania.
After August 24, 1944: Romanian army participates in the liberation of several towns and cities in Czechoslovakia (Banská Bystrica, Zvolen, Brno, Kroměříž, Prostějov, Olomouc, Humpolec). The fightings in the Czechoslovak territory lasted for five months, leaving 66,000 Romanian soldiers killed or injured. Some 5,600 received Czechoslovak orders and decorations.
April 7, 1945: diplomatic relations are resumed between the two countries.
1946: embassies are opened in the capitals of the two countries (Jaroslav Kraus serves as Czechoslovakia's ambassador to Bucharest and Horia Grigorescu as Romania´s ambassador to Prague).
July 21, 1948: Agreement on Friendship, Cooperation and Mutual Assistance between the Czechoslovak Republic and the Romanian People's Republic is signed in Bucharest.
August 21, 1968: Romania does not participate in the Warsaw Pact troops invasion of Czechoslovakia, publicly condemning the act of aggression.
February 20, 1991: Czechoslovak-Romanian association is created.
June 1991: Romanian President Ion Iliescu arrives in Prague to sign an act for the disbanding of the Warsaw Pact.
January 1, 1993: Czech Republic arises after the split of Czechoslovakia.
Czech-Romanian relations after January 1, 1993
September 6 - 7, 1993: Minister of Foreign Affairs of Romania Teodor Meleşcanu pays official visit to the Czech Republic.
November 7 - 8, 1993: Prime Minister of the Czech Republic Václav Klaus pays official visit to Bucharest. On this occasion, a Memorandum on Free Trade between the Czech Republic and Romania, the Agreement to Avoid Double Taxation and Prevent Fiscal Evasion and the Agreement on Protection and Mutual Promotion of Investments were signed.
June 12 - 15, 1994: President of the Chamber of Deputies of the Romanian Parliament Adrian Năstase pays official visit to the Czech Republic.
June 21 - 23, 1994: President of the Czech Republic Václav Havel pays official visit to Bucharest. On this occasion, the Agreement on Friendly Relations and Cooperation between the Czech Republic and Romania was signed.
May 25 - 27, 1995: Minister of Foreign affairs of the Czech Republic Josef Zieleniec pays official visit to Romania. On this occasion, the Intergovernmental Protocol on Updating the Bilateral Judicial Framework was signed.
March 10 - 11, 1997: President of Romania Emil Constantinescu pays official visit to Prague.
October 10 - 14, 1998: President of the Senate of the Czech Republic Petr Pithart pays official visit to Romania.
November 8 - 10, 1998: Minister of Foreign Affairs of Romania Andrei Gabriel Pleşu pays official visit to the Czech Republic.
June 2 - 5, 1999: President of the Senate of Romania Petre Roman pays official visit to the Czech Republic.
March 18 - 19, 2000: Prime Minister of the Czech Republic Miloš Zeman pays official visit to Romania.
September 22 - 23, 2000: Minister of Foreign Affairs of the Czech Republic Jan Kavan pays official visit to Romania.
October 8 - 9, 2000: Prime Minister of Romania Mugur Isărescu pays official visit to the Czech Republic.
March 4 - 5, 2002: Minister of Foreign Affairs of Romania Mircea Geoana pays official visit to the Czech Republic.
May 18, 2002: President of the Czech Republic Václav Havel pays working visit to Bucharest.
April 8, 2003: Minister of Foreign Affairs of the Czech Republic Cyril Svoboda pays official visit to Romania.
March 15 - 16, 2004: Prime Minister of the Czech Republic Vladimir Špidla pays official visit to Romania. On this occasion, a joint Czech-Romanian Declaration on Strengthening Cooperation in European issues was signed.
April 6 - 8, 2004: President of Romania Ion Iliescu visits the Czech Republic on the occasion of the inauguration of the Romanian Cultural Institute in Prague.
September 19 – 23, 2004: President of the Senate of the Czech Republic Petr Pithart pays official visit to Romania.
March 3, 2005: Minister of Foreign Affairs of the Czech Republic Cyril Svoboda pays official visit to Romania.
May 25 - 27, 2005: President of the Senate of Romania Nicolae Văcăroiu pays official visit to the Czech Republic.
July 10 to 12, 2006: Official visit to Romania by the President of the Czech Republic Václav Klaus, and his spouse.
May 25, 2007: President of Romania Traian Băsescu attends the 14th Meeting of the Presidents of Central European States held in the city of Brno.
October 23, 2007: Minister of Foreign Affairs of Romania Adrian Cioroianu pays official visit to the Czech Republic.
January 22, 2008: Prime Minister of Romania Călin Popescu Tăriceanu pays official visit to Prague. On this occasion, the Protocol amending the Agreement between the governments of the Czech Republic and Romania on Promotion and Mutual Protection of Investments and the Agreement on Cooperation in the Field of Education were signed
July 15 - 16, 2009: President of Romania Traian Băsescu pays state visit to Prague at the invitation of the President of the Czech Republic Václav Klaus.
January 28, 2010: opening of the exhibition of photographs and documents organized by the Ministry of Foreign Affairs of Romania with the participation of the Embassy of the Czech Republic in Bucharest, followed by a seminar and a concert to mark the 90th anniversary of the establishment of the Czech-Romanian diplomatic relations.