Alexander Tantoco Lopez (born November 15, 1958) is a Filipino lawyer, businessman, and government official. He is the chairperson of the Philippine Reclamation Authority (PRA) under the administration of President Bongbong Marcos. He is the son of former Manila Mayor Mel Lopez, and brother of former Manila 1st district congressman Manny Lopez. He is also the chairperson and CEO of Pacific Concrete Products Inc.
Legal career.
A graduate of Ateneo Law in 1985, Lopez worked for his father as his chief of staff and personal assistant. 
Business career.
Lopez is the chairperson and chief executive officer of Pacific Concrete Products Inc. (PCPI), a contractor classified as Quadruple-A, the highest level granted to construction firms in the Philippines.
As PCPI's chair and CEO, Lopez subleased property in Pasay to 3D Analyzer Information Technologies Inc., a Philippine Offshore Gaming Operator (POGO). The sublease, finalized in January 2024 while Lopez already held his government-appointed PRA position, involved property originally leased from the Philippine National Construction Corporation, a government-owned entity. Lopez's company acknowledged renting to 3D Analyzer, noting it had verified 3D Analyzer's permits and licenses but emphasized that it bore no responsibility for the tenant's operations. Following a raid in October 2024, authorities uncovered illicit online scams conducted by 3D Analyzer, which had falsely reported ceasing operations despite Marcos's earlier directive banning POGOs. PC stated its willingness to cooperate with the investigations.
Political career.
Lopez ran for Mayor of Manila in the 2022 elections under the Partido Federal ng Pilipinas, with Raymond Bagatsing of Kilusang Bagong Lipunan as his running mate. He and Bagatsing were defeated by incumbent vice mayor Honey Lacuna and congressman Yul Servo, respectively. 
Lopez filed an electoral protest against Lacuna's victory, alleging "electoral frauds, irregularities, and anomalies" in the election. On October 6, 2022, the Commission on Elections dismissed the protest, citing lack of evidence and baseless claims.
Government career.
In 2023, Marcos appointed Lopez as the chairperson of the Philippine Reclamation Authority (PRA). As PRA chair, Lopez was tasked with leading the agency in regulating and overseeing all reclamation projects in the Philippines under Marcos's Build Better More program.
The PRA reported a net income of ₱89.86 billion (about US$1.6 billion) in 2023, an increase from previous years. It was ranked among the most profitable government-owned and controlled corporations in the Philippines that year.
Electoral performance.
2019.