"The permit to hold manifestations... given by the Chisinau City Hall was withdrawn yesterday," Vladimir Filat told journalists.
City Hall had issued a permit for demonstrations to be held in the capital on April 6-20.
Protests against the ruling Communist Party's victory in Sunday's elections turned violent on Tuesday, with some 10,000 rioters seizing control of the presidential office and parliament building. Some 170 police officers and more than 100 civilians were injured in the clashes.
The protests, which began peacefully, were initially led by Filat. He said Thursday that his party could not organize its own demonstrations as the protests had been hijacked by other forces.
The Moldovan president has accused Romania of inciting the violence in the capital, and on Wednesday the Moldovan government approved the introduction of a visa regime with Romania, and also expelled the country's ambassador.
The capital was reportedly quiet during the night, with no demonstrations or violence.
The parliamentary speaker said Thursday that damage to the parliament building in Moldova following Tuesday's riots in Chisinau has been estimated at $40 million.
President Vladimir Voronin said the reconstruction of the building would be financed using funds allocated for educational institutions where the young people who participated in the riots study.
