There are 301 candidates in the running for this year’s award — 223 individuals and 78 organizations — according to the Nobel Peace Prize website.
The names of nominators and nominees won’t be revealed for 50 years.
She is the bookies’ favorite to scoop the prize, with London-based betting company Coral putting her at 1/2 odds.
Another British bookmaker, William Hill, which put Thunberg at odds of 8/13, said Wednesday that 96% of Nobel Peace Prize bets had been placed on Thunberg.
William Hill spokesman Rupert Adams said punters were “convinced” Thunberg will win.
But the teenager faces competition from world leaders.
Among the 78 organizations, both Betfair and William Hill show Reporters Without Borders, which advocates for press freedom, and the United Nations Human Rights Council as outside bets.
The winner will be announced live from Oslo, Norway, at 11 a.m. local time (5 a.m. Eastern Time) on Friday.