Among those expected to attend the event are Britain's King Charles and the presidents of Germany, Austria, France, Switzerland, Italy and Finland.
Also taking part will be German Chancellor Olaf Scholz, Israel's Education Minister Yoav Kisch and the prime ministers of Canada, Croatia, Ireland, Sweden, Norway and the Netherlands, according to the Auschwitz-Birkenau Memorial and Museum in the southern Polish city of Oświęcim.
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The list of guests further includes King Felipe and Queen Letizia of Spain, King Willem-Alexander and Queen Máxima of the Netherlands, and John Dunlap, the head of the lay Catholic order of the Knights of Malta.
Russia was not invited due to its invasion of Ukraine.
Polish President Andrzej Duda will join international dignitaries for the event at the site of the former Auschwitz camp.
The main commemoration will begin at 4 p.m. local time in front of the gate to the former Auschwitz II-Birkenau camp. Survivors, official delegations and other participants will gather under a large tent, partially covering the site's original structure.
Around 50 former Auschwitz prisoners and Holocaust survivors from various countries are expected to attend.
The German Nazis murdered around 1.1 million people at Auschwitz, the majority of whom were Jews. Among the victims were also Poles, Roma, Soviet prisoners of war, and individuals of other nationalities. When the camp was liberated by Red Army soldiers on January 27, 1945, around 7,000 prisoners remained at the site.
Today, Auschwitz stands as a powerful symbol of the Holocaust and the atrocities of World War II. In 2005, the United Nations designated January 27 as International Holocaust Remembrance Day.
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Source: IAR, PAP, auschwitz.org