"We have nominated Greta because the climate threat may be one of the most important causes of war and conflict", parliamentary representative Freddy Andre Oevstegaard said.
On Friday, hundreds of thousands of students inspired by Thunberg are expected to walk out of class as part of the worldwide Youth Climate Strike.
"The massive movement Greta has set in motion is a very important peace contribution", he added. After Friday, some students plan to continue skipping school on Fridays until political leaders take action.
Almost 100 schools are expected to participate, Thunberg said on Twitter.More news: Android Q’s Desktop Mode is real, here’s your first look
The Swedish teenager - who on her Twitter page describes herself as "a 16-year-old climate activist with Asperger [syndrome]" - first staged a school strike for the climate in front of the Swedish parliament in August last year.
Co-organiser Isla Day said young people could not wait until they were older to take action on climate change. We'll be walking from the University of Malta to the Parliament building in Valletta, to raise awareness on our future and our planet! The less action taken in the short term, the worse the long-term impacts will be, researchers have spelled out in recent reports from United States and United Nations climate scientists.
Maltese students will be marching from the University of Malta to Valletta, Malta's capital city, to emphasise how they do not want to inherit a land, and indeed world, that has been destroyed and poisoned through humanity's gluttonous greed.
"I think that change is on the horizon and the people will stand up for their future".More news: 10 things you need to know about Safety Jabrill Peppers
One of the strike organisers, Year 13 student Molly Doyle said she believes the strike is the best way to create awareness of the situation.
"We are striking because our world leaders have yet to acknowledge, prioritize, or properly address our climate crisis", according to the Youth Climate Strike's website.
"We are only seeing the beginning", Thunberg tweeted recently. I don't want you to be hopeful.More news: After Closed Meeting, Nadler Makes New Claims About Whitaker's DOJ Conduct