Many carried signs with messages in English reading "Youth4Climate", "School Strike", "There is no Planet B", "The oceans are rising and so are we" and "I do not want to clean up after my parents".
Taking to Twitter, Thunberg expressed her gratitude for the nomination.
Because of his involvement in the Fridays for Future movement, Finlay represented Scotland at a meeting of more than 60 young climate change campaigners from 20 nations at the European Parliament. It could be a great advantage to have youth representation for climate change in Hong Kong as this would allow future generations to have a voice and more control over our collective future.
Today's protest, which will be mirrored by young activists around the world, is slated to be even bigger.
"Australia is in the thick of the climate crisis", the invite says.
Following the declaration of a climate emergency by the City of Edinburgh Council, schools have been encouraged to allow students to take part in the strike.
She said she was "hyper aware" of her physical safety for a couple of years, but realised how "precious" it was that MPs could generally go about their business without security.
National politicians and some university professors can nominate candidates for the Nobel Peace Prize.
"The massive movement Greta has set in motion is a very important peace contribution", he added.
Our new Insight poll reveals that over half of parents with school-age children strongly support those attending today's #schoolstrike4climate protest across New Zealand.
"There have been several people nominating me and I found out the first ones were maybe a month ago and then more people by time, but I think it is unbelievable", she said.