A ceremony to this effect was held at the United Nations headquarters in NY.
Humanitarian and girls right's activists Malala Yousafzai has been named the youngest ever messenger of peace for the United Nations (UN).
Honouring her for the vital role, Guterres, said: "You have been to the most hard places [.] visited several refugee camps". She has since become a global human rights leader, the youngest-ever Nobel Peace Prize laureate and has co-founded the Malala Fund to help the millions of girls who lack access to formal education.
She was also the youngest Nobel laureate, winning the Nobel Peace Prize when she was 17 years old.
In 2012, Malala was shot in the head by the Taliban because of her public fight to attend school in her native Pakistan. Her campaign led to a Taliban assassination attempt near her home in northwest Pakistan that left her severely wounded.
"While recovering from the Taliban attack, extremists tried everything to stop me (and the fact that they didn't) is clear evidence that no one can stop me".
Of her emergence as the leading campaigner for girls" education, she said: "It wasn't that I was very intelligent or very clever or I had some special kind of training or something.
"You have been to the most hard places, visited several refugee camps".
Yousafzai was greeted on the steps of the Centre Block by Prime Minister Justin Trudeau, as well as a parade of dignitaries, cabinet ministers and diplomats inside the rotunda beneath the Peace Tower.
Guterrers, while conferring the highest United Nations award on her, said Yousafzai's life was "a remarkable example of solidarity".
"I am Muslim and I believe that when you pick up a gun in the name of Islam and kill innocent people, you are not a Muslim anymore".
Malala said that the honour she received today from the UN Secretary General who designated her as a UN Messenger of Peace, was also given to Pakistan as well.
"And I realized that if you remain silent, you are still going to be terrorised".
Using her role model father as an example, Malala said he always told people not to ask him what he did for her, "but ask what I didn't do - I didn't clip her wings".
Her role as a Messenger of Peace will be an extension of the work she now does with the Malala Fund, an organisation that advocates globally for girls' rights to education.
Threats to education in Pakistan were spotlighted again by the attack on the Army Public School in Peshawar in December 2014 that left 145 people dead, majority children.
"Accepting the accolade in NY, she said: "(Bringing change) starts with us and it should start now".
"Men should not clip the wings of women, and let them fly and let them go forward", she said.
At the ceremony, Trudeau said that Malala's story was inspirational. She called herself a "proud Pakistani" and a "proud Muslim" and said she was obliged to raise her voice against the misrepresentation and misperception of her country and her faith.