"Marcin Suder is already back home," Radoslaw Sikorski said on his official Twitter account.
"He was very lucky, he managed to escape," foreign ministry spokesman Marcin Wojciechowski told AFP without elaborating.
Suder, a 34-year-old freelancer who worked for the Corbis agency and other outlets, was abducted by masked gunmen on July 24 during a raid on a media centre in Saraqeb, in the northwestern province of Idlib.
No reason was given for his kidnapping and no one had publicly claimed responsibility for the abduction.