According to the Palestinian embassy, the diplomat passed away because of an illness at the age of 85.
The announcement on the funeral ceremony is set to made by the embassy.
Al-Zawawi, bid farewell to Iran in early January 2022, bringing to a close four decades of his diplomatic mission in the Islamic Republic.
Al-Zawawi, one of the founding members of the Fatah political party, was the second Palestinian ambassador to Tehran since the 1979 Islamic Revolution.
He had been holding the post in Iran since 1980. Before, he had severed as the Palestinian ambassador to Algeria, Brazil, and Kenya.
His daughter Salam al-Zawawi is now Palestine's ambassador to Iran.
A commemoration ceremony for the late diplomat was held on February 28, 2022, in Tehran. During the event, al-Zawawi said: "We have a clear slogan which is establishing a Palestinian government from the river to the sea and we accept nothing less than this."
"Israel is a cancerous tumor and needs to be removed from the sacred land of Palestine."
"I have been in Iran for 42 years and observed the great work of Imam Khomeini and the Iranian nation. This great man exploded a major bomb in the world that was more powerful than all nuclear bombs of the world combined. He united the nation," lauded Zawawi.
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