New Twitter owner Elon Musk says Donald Trump’s account was reinstated after a poll was taken in which users narrowly supported the move.
“The people have spoken,” Mr Musk tweeted, saying 51.8% of more than 15 million Twitter users had voted to lift the ban.
But the former US president may not return to the podium, declaring earlier: “I see no reason for it”.
His account was suspended in 2021 due to the risk of incitement to violence.
Twitter’s former leadership acted just days after Donald Trump supporters stormed the US Capitol in Washington DC on January 6.
Hundreds of rioters entered the compound as the US Congress tried to certify Joe Biden’s victory in the presidential election. The violence that followed resulted in the deaths of four civilians and a policeman.
Shortly after the riots, Donald Trump’s Facebook, Instagram and YouTube accounts, which had tens of millions of followers, were suspended.
Several months later, he launched his own social media platform, Truth Social.
Earlier this week, the Republican announced he would again run for the US presidency in 2024.
Mr Musk, the world’s richest man, took control of Twitter in October in a $44bn (£37bn) deal.
He immediately embarked on sweeping changes at the social media giant, fearing it would relax Twitter’s hate speech and misinformation regulations.
With just over a week to go until the November 8 US midterm elections, he responded to questions about his plans to reinstate Mr Trump’s account by tweeting: “If I had a dollar every time someone asked me if Trump came back to this platform, Twitter would make money!”
Earlier this week, he told employees that the company’s office buildings would be temporarily closed.
The announcement comes as many employees resigned after Mr Musk called on them to sign up for “long hours at high intensity” or leave.