Oscar "Oca" David Albayalde is a retired Filipino police officer who served as the 22nd Chief of the Philippine National Police (PNP). Known for his strict leadership style and frequent presence on the frontlines of controversial police operations, Albayalde rose to prominence during the administration of President Rodrigo Roa Duterte.
Born in San Fernando City, Pampanga, Albayalde pursued a career in law enforcement after entering the Philippine Military Academy (PMA). He graduated as part of PMA Sinagtala Class of 1986, making him a mistah (classmate) of his predecessor, Director General Ronald "Bato" dela Rosa. During his academy days, he belonged to Charlie Company.

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Before becoming the PNP Chief, Albayalde built his career through several key assignments. He once served as Executive Officer of the Directorate for Plans in Camp Crame and also headed the Pampanga Provincial Police Office. However, his Pampanga posting ended in 2014 after a controversial drug operation in Mexico town led to his relief. Despite this, he regained the trust of the organization and was appointed Regional Director of the National Capital Region Police Office (NCRPO), where he became widely recognized for his hands-on approach.
As NCRPO Chief, Albayalde was often seen leading from the front, whether during the ASEAN Summit security preparations or in the aftermath of incidents such as the Resorts World Manila attack in 2017. He was known for conducting surprise inspections across Metro Manila, often riding his signature big bike. His passion for biking became part of his public persona, highlighted by his long rides from Manila to Baguio during the PMA homecoming and to Silang, Cavite, for the PNP Academy's anniversary.
On April 5, 2018, President Duterte announced his appointment as the Chief of PNP, succeeding Dela Rosa. His leadership was characterized by discipline, visibility in the field, and efforts to maintain the PNP's role in Duterte's aggressive anti-crime and anti-drug campaigns.
Albayalde is also a family man. He is married and has three children, often bringing along his youngest daughter during inspections around the Metro. Beyond his police duties, he is described as approachable and active, embodying both firmness as an officer and warmth as a father.
He retired on November 8, 2019 at the age of 56.