Participation in Sunday's ballot was a massive 74.2 percent, the central election commission said, despite reports of scant attendance at polling stations in a country described by Washington as the last dictatorship in Europe.
The opposition said actual turnout was barely half that, charging that the official rate was inflated by a five-day pre-election process that allows state workers to take ballot boxes directly to voters across the ex-Soviet state.
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With the authorities congratulating themselves on the high turnout as a vote of confidence, monitors led by the OSCE European security and democracy watchdog were due to report their findings at 1100 GMT.
An analysis of the list of those elected to the 110-seat chamber showed that only four candidates who are not part of the main pro-government faction had made the parliament.
In a quirk typical of Lukashenko's regime, there is no ruling party in Belarus.
But three of those new lawmakers belong to the largely pro-government Communist Party of Belarus while one is a member of the marginally opposition Agrarian Party.
All four had pledged allegiance to Lukashenko's policies during the election campaign, the Interfax news agency said in its analysis.
"The new parliament is going to be just as much in the pocket of the authorities as the previous one," said the opposition news site Charter 97 which now operates from Poland to escape persecution at home.
Election commission head Lidya Yermoshina conceded that it was "doubtful" that the opposition had won any of the 109 seats decided on election day. Elections were inconclusive in just one constituency.
"This was the worst of the worst election campaigns in Belarus," the opposition United Civil Party leader Anatoly Lebedko told AFP.
"These were pseudo-elections," he argued.
"People simply did not vote in them as they know the authorities appoint their own. Thousands of people were implicated in the falsification to make up the turnout."
Vitaly Rymashevsky, co-chairman of the Belarus Christian Democracy party, told AFP his party's observers believed only 38 percent of the electorate had voted after much of the opposition called for a boycott.
Facing economic sanctions and a travel ban from the West over rights abuses, Lukashenko's regime has moved even closer to its historic ally Russia, resisting calls for economic and electoral reforms.
Lukashenko, known to his admirers as "Batka" (Dad) and who cast his vote alongside his extra-marital young son Kolya, had praised the "calmness" of the poll.
"They should envy our boring elections. We don't need any revolutions or upheavals," said Lukashenko, who has ruled Belarus for 18 years.
Nearly two years after unleashing a crackdown on demonstrators who dared question the scale of his election to a fourth term in December 2010, Lukashenko faced hardly any challenge from his scattered and weakened foes.
Several opposition groups called for a boycott of the poll, including United Civil Party and The Belarus People's Front, although others still supported certain candidates.
But the authorities still appeared to be taking no chances. About a dozen protesters had been arrested in the past week and thousands of flyers calling for a boycott were confiscated.
A dozen buses packed with riot police lurked on the side streets of central Minsk overnight in case any protests should break out, an AFP correspondent said.
The outgoing parliament spent the term rubber-stamping legislation almost exclusively issued by the president's office, drafting and passing only four largely inconsequential bills of its own.
