Junior Home Office minister Lynne Featherstone said granting Blanc a visa "could have led to an increase in sexual violence and harassment".
"I am delighted that Mr Blanc won't be coming to our shores," she added.
The Swiss-American dating coach claims to teach men how to attract women, but his methods have been widely viewed as abusive.
British ministers had been urged to deny the visa on the grounds that Blanc was "not conducive to the public good", with 158,000 signing the protest on website change.Org.
"Do not associate the UK with a man who chokes women around the world as part of his pick-up game.
"It's not only women who are affected; Blanc's misogynistic 'pick up techniques' directly exploit vulnerable men who buy into rape culture and end up believing that this is an appropriate way to behave."
Blanc, an "executive coach" for the company Real Social Dynamics, was due in Britain on Friday as part of a world tour.
"As a husband and father of two young girls, I find this person's views, his actions and the fact he profits from them, absolutely and utterly disgusting," Canadian Immigration Minister Chris Alexander said in a statement.
"It is my duty as a minister to help ensure that women are protected from all forms of violence and subjugation, in line with Canadian laws.
"That is why we are looking at all options and will consider using every tool at our disposal to protect the rule of law on Canadian soil," he added.
He said photos of him choking women and his apparent endorsement of violence as a means of control "were taken out of context" and were a "horrible attempt at humour".
"I teach guys how to gain confidence, most of them socially awkward, in order to socialise with women and perhaps to get into a relationship with women," Blanc insisted.
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