​Following Hamas’ surprise attack on 7 October 2023, the initial celebratory mood among the Arab public turned into one of despair and anger as Israel declared war and its subsequent ground invasion of the Gaza Strip, leaving widespread destruction and perpetrating countless massacres, amounting to a genocide. The Arab public responded with vigorous economic boycotts, heightened social media activism, and street protests, displaying a mix of solidarity with the Palestinians and anger and outrage toward Israel’s conduct of war and Arab governments’ inaction. This paper analyses Arab Opinion Index data from a survey conducted between 12 December 2023 and 5 January 2024, focusing on public opinion in Palestine’s neighbouring countries, Egypt, Jordan, and Lebanon. The survey reveals that the Arab public is highly affected by the war in Gaza, and that there is a strong sense of solidarity with Palestinians. It also reveals Arab public dissatisfaction with Western support for Israel and growing anti-Western sentiment, particularly toward the United States.