The Washington Post reports the pardon was approved late on Tuesday after days of deliberations.
"Prosecutors pursued Mr Bannon with charges related to fraud stemming from his involvement in a political project. Mr Bannon has been an important leader in the conservative movement and is known for his political acumen," the White House said, after granting Mr Bannon a pardon.
After an intense lobbying effort, a mix of white-collar criminals and people whose cases have been championed by criminal justice activists have been pardoned.
Boulanger pleaded guilty to bribing government officials in January 2009.
"Mr Boulanger is known as a model member of his community. In addition, he is remorseful for his actions and would like to leave his mistakes behind him," the White House said.
Death Row Records founder Michael "Harry O" Harris was informed on Tuesday that his prison sentence for attempted murder and cocaine trafficking had been commuted.
"Upon his release, Mr Harris will have a meaningful place of employment and housing with the support of his family," the White House said in a statement.
Snoop Dogg had reportedly been lobbying the White House on behalf of Harris, despite the rapper being a fierce critic of the President and even making a video in which he pretended to shoot a clown lookalike.
Rapper Lil Wayne (real name Dwayne Carter) also made the cut.
Lil Wayne, who supported Mr Trump for re-election, pleaded guilty last year to illegally possessing a gold-plated handgun while travelling to Florida in a private jet in 2019, which was not allowed due to a prior felony conviction.
His bag also contained cocaine, ecstasy and oxycodone.
"Brett Berish of Sovereign Brands, who supports a pardon for Mr Carter, describes him as 'trustworthy, kind-hearted and generous.' Mr Carter has exhibited this generosity through commitment to a variety of charities, including donations to research hospitals and a host of foodbanks," the White House said.
In a post-midnight announcement on his last day in office, Trump grants pardons or commutations to 143 people, including Steve Bannon, Kwame Kilpatrick, Elliott Broidy, Robin Hayes, Rick Renzi and Duke Cunningham.
The lawyers for the man known as "Joe Exotic" had a limo standing by for his release from prison, as they were "extremely confident" about their client getting a pardon.
Joseph Maldonado-Passage was convicted and sentenced to 22 years in prison for a murder-for-hire plot and for violating wildlife laws. He became the star of Netflix documentary 'Tiger King' last year.
"We've got hair, makeup, wardrobes. Trust me, anything you can think of we have it, including a doctor and also a mental health expert," his lawyer earlier told KOCO News.
However he did not make the list.
Donald Trump has not pardoned himself. Photo / AP
Fellow rapper Kodak Black, whose real name is Bill Kapri, was granted a commutation of his sentence.
The rapper was sentenced to 46 months in prison for making a false statement on a Federal document. He had served nearly half of his sentence.
"Before his conviction and after reaching success as a recording artist, Kodak Black became deeply involved in numerous philanthropic efforts," the White House said.
Elliott Broidy, the former Deputy National Finance Chair of the Republican National Committee, was granted a full pardon.
Broidy was convicted on one count of conspiracy to serve as an unregistered agent of a foreign principal.
"Broidy is well known for his numerous philanthropic efforts, including on behalf of law enforcement, the military and veterans programs, and the Jewish community," the White House said.
Anthony Levandowski, an ex-Google engineer who pleaded guilty to stealing self-driving car technology when he defected to Uber, was also pardoned.
"Notably, his sentencing judge called him a 'brilliant, groundbreaking engineer that our country needs.' Mr. Levandowski has paid a significant price for his actions and plans to devote his talents to advance the public good," the White House said.
WHAT ABOUT ASSANGE AND SNOWDEN?
Trump had previously entertained pardons for Australian WikiLeaks founder Julian Assange and mass surveillance whistleblower Edward Snowden, but backed down reportedly due to pressure from Senate Republicans and the advice of White House counsel Pat Cipollone.
Assange is currently in the UK fighting extradition to the US to face espionage charges, which carry a maximum of 175 years in prison, while Snowden has been living in Russia ever since leaking troves of documents about the National Security Agency's highly secretive spying programs.
According to CNN, Trump decided against pardons for the two men out of fear of angering Republicans who will soon decide whether he is convicted in his Senate impeachment trial.
The broadcaster says multiple Senators sent messages through aides that they felt strongly about not granting clemency to Assange or Snowden.
Trump has, also according to latest US media reports, moved away from the temptation to issue himself a pre-emptive pardon. This would anger his Republican backers in the Senate right ahead of the start of the impeachment trial.
Although Trump was easily acquitted thanks to party support in his first impeachment last year, this time it may not go so well.
Senior Senate Republican McConnell said in blistering comments Tuesday that Trump had "provoked" his supporters and that the "mob was fed lies" before embarking on the assault against Congress.
