The Ukrainian Embassy in Dublin said that Ireland is "literally at the forefront of European countries" when it comes to providing "overwhelming and practical support" for its people.
It follows a video address to EU leaders during last night's summit in Brussels when the President of Ukraine, Volodymyr Zelensky, delivered a roll call of EU member states that stood in solidarity with his country.
He said: "Lithuania stands for us. Latvia stands for us. Estonia stands for us. Poland stands for us…"
However, he appeared to urge some countries, such as France and Germany, to go further.
Mr Zelensky concluded his roll call by saying: "Luxembourg - we understand each other. Cyprus - I really believe you are with us. Italy - thank you for your support!
"Spain - we'll find common ground. Belgium - we will find arguments. Austria, together with Ukrainians, it is an opportunity for you. I'm sure of it. Ireland - well, practically."
In a statement to RTÉ News tonight, the Ukrainian Embassy said both President Zelensky and Prime Minister Denys Shmyhal were "unequivocal and clear" on this during their recent communications with Taoiseach Micheál Martin.
It added: "We would like to pay special tribute to the people of Ireland for their huge response, generosity, hospitality and willingness to grant protection for the Ukrainians."
The embassy said: "The people of Ukraine are highly grateful and appreciate Ireland's huge support that we are receiving at this unprecedently horrible time for Ukraine from the Irish Government, the Houses of the Oireachtas, local authorities, businesses, non-government organisations and many other institutions."
The statement concluded: "We look forward to hearing more messages from the President of Ukraine on 6 April when he addresses the Houses of the Oireachtas."
Ukraine's Minister for Foreign Affairs Dmytro Kuleba also praised Ireland.
He said in a post in Twitter: "Grateful to our Irish partners for joining the Group of Friends of Accountability today. Undoubtedly, Ireland is at the forefront within the EU and beyond providing essential support for Ukraine in all possible ways."
The GoF is an informal forum for states dedicated to ensuring accountability for international crimes committed following the Russian invasion of Ukraine.
The Taoiseach earlier today challenged reports that President Zelensky had included Ireland in a group of countries that had not fully supported Ukraine.
Arriving on the second day of the summit, Micheál Martin was asked if Ireland had been "singled out" as falling short in its support.
He told reporters: "That wouldn’t have been my read of it. He was actually talking in terms of the European perspective ... I wouldn’t have taken the same slant that some may be taking from it."
Mr Martin added: "I spoke to him last week and he was very strongly in praise of the Irish contribution both from a humanitarian perspective and also in terms of our clear support for Ukraine’s application to join the European Union and he thanked me personally for my own personal commitment to that.
"So I’m not going to surmise in terms of whatever particular take you would take from the use of the word almost or practically and I wouldn’t overstate that to be frank."
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Ireland, while fully backing the Ukrainian push for EU membership, has not abandoned its position of military neutrality in the face of the Russian invasion.
Mr Martin stressed that the country is not politically neutral and has committed millions of euros in non-lethal aid to Ukraine.
"Obviously we're a military neutral country, but we explained that we facilitated the EU peace facility, which has been of enormous support to the Ukrainian people," Mr Martin said.
Ireland has taken in more than 10,000 Ukrainian refugees, with thousands more expected to arrive in the coming weeks after the Government removed any requirement for visas.
EU leaders have so far resisted the call to accelerate the accession of Ukraine to the bloc.
Additional reporting Paul Cunningham, PA