During a rally in Turkey's eastern Adiyaman province, Yildirim recalled the UN General Assembly's resolution that rejected the US move to recognize Jerusalem (al-Quds) as Israel's capital.
"Turkey will continue backing Palestine and oppressed nations. We will continue working for world peace," he said, Anadolu Agency reported.
The UN's 193-member General Assembly on Thursday adopted the resolution on Quds with an overwhelming majority, calling on the US to withdraw its recognition of the city as Israel's capital.
US President Donald Trump's Dec.6 decision drew angry demonstrations across the Muslim world. Turkish President Recep Tayyip Erdogan and other top Turkish officials have been at the international forefront opposing the US move.