Khalil al-Hayya is a Palestinian politician who has served as the deputy chairman of the Hamas Political Bureau since August 2024 until October 2024, succeeded Saleh al-Arouri after his assassination. He also serving as one of the acting quinquevirate leadership of Hamas, alongside with Khaled Mashal, Zaher Jabarin, Muhammad Ismail Darwish, and an unnamed Hamas official after Yahya Sinwar was killed by the IDF in October 2024. He also was elected to the Palestinian Legislative Council since January 2006 as a representative of Gaza City.