As their stories and photos were published worldwide, Snowden's helpers fear prosecution or torture in their home countries.
"Those who helped Edward Snowden in Hong Kong when he was seeking asylum now find themselves at dire risk if sent back to their countries," Dinah PoKempner, general counsel at the Human Rights Watch organization, said.
The watchdog stressed that the lawyers were now seeking asylum for Snowden's support givers in Canada.
The human rights organization believed those people were at great risk and urged Canada to immediately take necessary action to protect them.
"Canada has the opportunity to a prevent a terrible outcome and should act immediately," PoKempner added.
Snowden was hiding in Hong Kong in June 2013 after revealing to the press that he had classified information. Since then, Snowden has been residing in Russia, where he was granted asylum.