Elaine T. Masukat is a Filipino lawyer and government official currently serving as Senior Undersecretary and Officer-in-Charge (OIC) of the Presidential Management Staff (PMS) under the administration of President Bongbong Marcos.

She also worked as a consultant and chief of staff for Tiangco during his tenure as a congressman, a role she held from 2006.

[3] In January 2023, Masukat was appointed as Senior Undersecretary and Officer-in-Charge (OIC) of the Presidential Management Staff (PMS), replacing Naida Angping.

The directive, issued "upon the directive of the Executive Secretary" Lucas Bersamin, was flagged as "highly irregular" by Ombudsman Samuel Martires, who cited logistical challenges and existing backlogs in processing clearances.

Her career has spanned both local government and national administration, reflecting her commitment to public service.