The first of four days of bombings begins on the southern Philippine island group of Mindanao.

The Mindanao bombings was a series of seemingly unrelated bomb attacks that took place on July 4, 5, and 7, 2009 in the towns of Datu Piang and Jolo, and the cities of Cotabato and Iligan in Mindanao, Philippines. The bombings killed around 7 people and injured at least 66. The Armed Forces of the Philippines has blamed several militant organizations active in Mindanao, such as the Moro Islamic Liberation Front (MILF), the Abu Sayyaf, and Jemaah Islamiyah.

The Roman Catholic Church and its leader Pope Benedict XVI condemned the initial attack. A statement from the MILF said the attack was carried out by "heartless people" and called for an independent investigation to determine who was responsible. They also said, "there's no religious conflict in the south" and "we're fighting for our right of self-determination". A press secretary to President Gloria Macapagal Arroyo expressed confidence that the bombing would not collapse peace negotiations between the government and the MILF.

Several members of the opposition said that these attacks may be related to a possible plan by the government to place the country in emergency rule, alluding to the days of Martial Law under former president Ferdinand Marcos. Others have said they may be in preparation to heighten security amid the State of the Nation Address by Arroyo, which may restrict demonstrations and protest. The government rejected these claims and said they were assessing the situation. Security was increased in Metro Manila, the seat of government, and in other areas of the country, particularly Mindanao. A day after the incidents, the UN Development Program, meanwhile, announced it was suspending its operations for refugees in the south.