A UAE minister said the election of former army chief Abdel-Fattah El-Sisi as Egypt's president represented "new hope" for the most populous Arab country.
The wealthy UAE is one of the main supporters of the government in Egypt and has showered it with aid since the ouster of elected Islamist president Mohamed Morsi by the military last year following three days of mass protests nationwide.
"We all need to support Egypt as a nation and its people ... Egypt and its people are dear to us," said Minister of State for Foreign Affairs Anwar Gargash Gargash on Twitter.
El-Sisi won a landslide victory in a presidential election on Thursday. His country is suffering from corruption, high unemployment and a widening budget deficit.
"The challenges are great and the expectations are huge, but the moment that we see today is the most hope-filled for three years," said Gargash.
This story has been edited by Ahram Online.