Paolo Duterte told the city council of Davao, a southern port where he serves as vice-mayor, that he was resigning because of "recent unfortunate events in my life" - citing family problems and allegations of drug smuggling.
"These among others, include the maligning of my reputation in the recent name-dropping incident in the Bureau of Customs smuggling case and the very public squabble with my daughter," he said.
The president's son made headlines last week when he used the official Facebook page of the Davao vice mayor's office for an expletive-laced rant at his teenage daughter Isabelle, after she posted criticism of him on social media.
Her posts were not publicly available.
The vice mayor responded in a Facebook post - which was no longer publicly available today - saying his daughter had "embarrassed" herself with her behaviour though he did not elaborate.
Isabelle was in the media spotlight earlier this month when photos of her posing in designer gowns at the presidential palace went viral on social media.
He testified in the Senate in September to deny the drug allegations, in a country that has seen thousands killed in an anti-narcotics campaign launched by his father.
Harry Roque, the president's spokesman, said today that Paolo's resignation letter had been received but did not comment further as "the father wants to speak to the son first".
Davao mayor Sara Duterte, the president's daughter, said today she did not know if her brother's resignation had been accepted.
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