March 1 - As a result of the implementation of Electric Power Industry Reform Act (EPIRA) law or Republic Act 9136 one year and nine months earlier on June 8, 2001, National Power Corporation (NAPOCOR/NPC) took over the operations, maintenance, management, and ownership of the Philippine power grid and its related assets and facilities to another government-owned corporation National Transmission Corporation (TransCo) which officially started TransCo to own, operate, maintain, and manage the grid.
March 31 - In the early morning, an ambush took place in Vigan City, killing 4 people. Radio broadcaster and former Ilocos Norte board member Efren Rafanan Sr. survived the ambush, along with his daughter. Rafanan's wife Evelyn, his son Raffy Brian, and his brother Dennis were laid to rest 9 days later, alongside the family's security aide Elgin de Ocampo.[3][4]
April 2 – Another bomb explosion in Davao City hits the Sasa Wharf, killing 17 people and wounding 56. Several alleged Islamic militants would be later arrested for their involvement.[1]
May 10 – A bombing at the city market in Koronadal, South Cotabato, kills at least 10 people and injures 42; victims are mostly rickshaw drivers and their passengers. Suspected IndonesianJemaah Islamiyah members are among those would be later arrested in connection with the attacks in the city.[1]
June 23 - A tough new law regulating the sale and use of tobacco products, including the phaseout of all tobacco advertising in five years and a total ban on smoking in enclosed public places, including schools.
July 15 – The Supreme Court, reinstating the Sandiganbayan ruling in 2000 and setting aside its reversal in 2002, orders the forfeiture in favor of the government of ₱36 billion (US$676 million, year-end 2002) in Swiss bank deposits which are declared part of the ill-gotten wealth of the Marcos family, in what would be the single largest recovery of such wealth. The family will file motions for reconsideration in August but would be denied with finality three months later.[5]
On November 13, 2002, Republic Act No. 9177 declares Eidul Fitr as a regular holiday.[6] The EDSA Revolution Anniversary was proclaimed since 2002 as a special non-working holiday.[7] Note that in the list, holidays in bold are "regular holidays" and those in italics are "nationwide special days".
September 26 – Inday Badiday, host and journalist who was known as Philippine television's "queen of showbiz talk shows" and "queen of intrigues" (b. 1944)