In comments published on Thursday, Erdogan said he had discussed the issue of a possible mediation with Japanese Prime Minister Shinzo Abe on the sidelines of a G20 meeting, AP reported.
Erdogan said Abe asked the Turkish leader whether Turkey and Japan could act together, to which Erdogan responded that he would be willing to meet with Iran's leaders.
Erdogan spoke to Turkish journalists during a visit to China. His comments were published in the pro-government Sabah newspaper, Financial Tribune reported.
Iran has warned that it will increase its uranium enrichment, as tensions rise a year after US President Donald Trump unilaterally withdrew America from Iran's 2015 nuclear deal with world powers.