“I congratulate you on your election,” Merkel said in a statement.
“The stabilisation of Ukraine and a peaceful conflict resolution are as close to my heart as the implementation of central reforms of the judiciary, decentralisation and the fight against corruption,” she said in a statement.
“The Federal government will continue to actively assist Ukraine in its right to sovereignty and territorial integration in the future.”
Volodymyr Zelensky, whose only previous political role was playing the president in a TV show, trounced incumbent Petro Poroshenko by taking 73.2 percent of the vote, according to nearly complete official results released early Monday.
The star of the TV series “Servant of the People” will now take the helm of a country of 45 million people beset by challenges and having run on the vaguest of political platforms.
Merkel, who met the incumbent Poroshenko earlier this month in Berlin, added that she would welcome receiving Zelensky soon.
Germany has been a key broker in the conflict between Kiev and Russia-backed separatists in eastern Ukraine since Moscow annexed the Crimean peninsula in 2014, negotiating with France the now moribund Minsk peace accords.
The war in eastern Ukraine between government forces and rebels backed by Moscow has claimed some 13,000 lives and rumbles on despite a series of periodic truce deals.
The EU also has sanctions in force against Russia over its 2014 annexation of Crimea from Ukraine.