"The number of nominations increases almost every year, which shows a growing interest in the prize," the head of the institute, Geir Lundestad, told AFP.
The Nobel committee convened Tuesday for the first time this year to examine the candidate list and will announce the laureate in Oslo on October 10.
As usual, the committee refused to reveal the identity of any of the nominees, but Lundestad said that 47 of the 278 candidates were organisations.
Even though the list is kept secret for at least 50 years, the sponsors can choose to reveal the name of their nominee.
Putin is thought to be on the list, since Russian figures proposed his name in October, citing his role in the Syrian crisis.
The former KGB agent is credited with averting a US attack against Syria by suggesting putting Bashar al-Assad's regime's chemical weapons arsenal under international control.
Being nominated for the Nobel Peace Prize is relatively easy, since thousands of people can suggest candidates: lawmakers and ministers, university professors and former laureates.
At their first meeting, the five committee members themselves can add more names to the list.
The committee insists that being nominated does not imply an endorsement on its part.
Putin's chances of winning the prize appear limited given the ongoing crisis in Ukraine.
Another name likely to be on the list is Edward Snowden, former US security contractor for the National Security Agency, who has been provided asylum in Russia and is accused in his country of disclosing a large number of classified documents regarding a US global surveillance programme.
Other figures with a similar profile, such as Julian Assange – founder of WikiLeaks – and Chelsea Manning are also known to be on the list.
Malala Yousafzai, who was seriously wounded when she was shot in the head by a Taliban gunman at point blank range for promoting girls' education in the Swat area of Pakistan, is again known to be nominated, after being considered one of the favourites last year.
However, the prize went to the Organisation for the Prohibition of Chemical Weapons (OPCW), involved to this day in the dismantling of the Syrian chemical weapons arsenal.
Other names known to be on the list include jailed Belarussian rights activist Ales Belyatski and Denis Mukwege, a pioneering doctor who founded a clinic for rape victims in the Democratic Republic of Congo, both nominated in the past.
Kristian Berg Harpviken, director of the Peace Research Institute Oslo (PRIO) and one of the few experts to speculate openly on the winner, said his favourite for this year was Pope Francis for his efforts to redistribute wealth in the world.
Asked about the situation in Ukraine, Berg Harpviken said it was difficult to point out an individual or an organisation that could play a major role in the region in the months to come.
"The dramatic situation in which Ukraine finds itself could influence the Nobel committee's thoughts, but at this stage I don't see any clear candidates standing out," he said.
Other leads point at the peace processes in Burma and Colombia, which could deserve a Nobel prize if there were a major breakthrough in the next months.
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If Obama then why not Malala?
Haters gonna hate but a lot of us love and respect our brave daughter Malala! Long live Malala.
Malala, you make us proud. Keep up the great work.
She is indeed a brave girl. Who can oppose her cause " education for all" which she is continuing to promote despite threats to her life . Almost the whole world will love to see her getting the Nobel Peace Prize.
She is indeed a brave girl. Who can oppose her cause " education for all" which she is continuing to promote despite threats to her life .
Malala is the best person that the country has produced in quite a long time.
Quite tragic the way people are still trying to defame this poor girl. I only ask that the people who are so quick to call her out try and achieve half the things she has for a cause. Its a general problem with our nation that we eye others success and fame with poor intentions rather than promote and be proud of them.
This crap started again?
Oh yeah she didn't win Oscar this year either.
Hail the Malala & her ideology
this is highly ridiculous.. !! i am verryy saaadd !!
This girls has become obsessed with milking the situation for profit. Great marketing team behind her and she's making as much a possible.
Being a prime minister is a dream a lot of people have but do not have the means or political backing that is required in a country like Pakistan. People are not chosen because of their ability but because of there status and families i.e Bhuttos or Sharifs. Its a horrible shame a country with talent never lets the talented filter through.
Nomination itself is quite a big achievement. Hopefully the country doesn't repeat the same mistake as in Abdus Salam's case and then regret after 20 years. She is too young, with proper support she can represent the country better in the future.
People in Pakistan seem not to believe in second chances.
Putin due to Ukraine will not get, Snowden due to US will not get. That leaves Malala , lets see who else would qualify ?
Oh please! I thought we are over with this now or is it gonna continue till she makes her own political party
She's going to fizzle out in 1-2 years! As i expected, she hasn't even visited her home country for even a day & she's thinking about becoming a PM one day! This is the grave problem with people in sub-continent, only rare ones are level headed & live their lives with humility if they're given an opportunity to do something for their respective countries - look at Sir Edhi, how many times did he wish for this all important post of PM?! He has done so much for Pakistan! He deserves this award more than anyone! Malala will return to Pakistan only when she's ready to fight in the elections, really unfortunate. If we're given the same opportunity to go abroad, then most of the Pakistanis would leave,. P.S All of us know what people do when they're given important Govt posts & why they wish for it :)
Yay!!! No one is more worthy than this young lady. Super proud.