This is a complete list of senators of the Philippines during the 20th Congress of the Philippines listed by seniority from June 30, 2025.
The criteria for seniority used in this article are derived from the cumulative length of service of a member of the Senate prior to the current Congress. Although an official roster ranking senators by seniority is not publicly available, their total cumulative years of service have been used to determine seniority. It has long been customary, following the practice of the United States Senate, to elect the most senior senator as either president of the Senate or president pro tempore, although this practice has become less common in the modern Senate. Furthermore, seniority is traditionally considered in the selection of chairpersons of major Senate committees.
In cases where senators have equal cumulative service, seniority is determined by the following criteria, in order: Longest uninterrupted period of service Earlier date on which the cumulative length of service was achieved Alphabetical order of surnames
In this Congress, Tito Sotto is the most senior senator, having previously served 24 years in Senate, while Camille Villar is the most junior senator.
List of senators by seniority Rank Senator Party Length of previous tenures Notes 1 Tito Sotto NPC 24 years, 0 days Senate president (September 8, 2025 – May 11, 2026)Senate president pro tempore (from June 17, 2026) 2 Loren Legarda NPC 21 years, 0 days Senate president pro tempore (May 11 – June 3, 2026) 3 Panfilo Lacson Independent 18 years, 0 days Senate president pro tempore (September 8, 2025 – May 11, 2026) 4 Kiko Pangilinan Liberal 5 Pia Cayetano Nacionalista 18 years, 0 days 6 Lito Lapid NPC 7 Jinggoy Estrada PMP 15 years, 0 days Senate president pro tempore (until September 8, 2025) 8 Francis Escudero NPC 15 years, 0 days Senate president (until September 8, 2025) 9 Juan Miguel Zubiri Independent 13 years, 34 days 10 Alan Peter Cayetano Independent 12 years, 321 days Senate president (May 11 – June 3, 2026) 11 JV Ejercito NPC 9 years, 0 days 12 Sherwin Gatchalian NPC 9 years, 0 days Senate president pro tempore (June 3–17, 2026)Senate president (acting, June 3–17, 2026; from June 17, 2026) 13 Risa Hontiveros Akbayan 14 Joel Villanueva Independent 15 Bam Aquino KANP 16 Ronald dela Rosa PDP–Laban 17 Bong Go PDP–Laban 18 Imee Marcos Nacionalista 19 Robin Padilla PDP–Laban 20 Raffy Tulfo Independent 21 Mark Villar Nacionalista 22 Rodante Marcoleta Independent rowspan="3" 23 Erwin Tulfo Lakas 24 Camille Villar Nacionalista
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