S
- Safer sex practices
- Safety and health audit
- Safety and health committee
- Safety and health program
- Safety officer
- Safety signage
- Sagip Saka Act
- Salary Standardization Law of 2019
- Sangguniang Kabataan
- Sangguniang Kabataan official (SK official)
- Sangguniang Kabataan Reform Act of 2015
- Sanitary facility
- Satellite
- Savings account
- Scholarship
- School
- Seafarer
- Seafarers Protection Act
- Seal of Good Local Governance (SGLG)
- Second hand spare parts
- Secondary cancer
- Secondary cooperative
- Secured creditor
- Security
- Security interest
- Selected Training Programs (STPs)
- Self-directed learning
- Semester
- Separated child
- Serious case
- Service charge
- Service provider
- Service user
- Services
- Settlement
- Severe acute malnutrition (SAM)
- Sexual orientation
- Sexually transmitted infections (STIs)
- Shari'ah
- Ship-based casino
- Shortchange
- Shuttle service
- Simulation of birth record
- Small Enterprises
- Smuggling
- Social innovation
- Social performance
- Social protection
- Social Security System (SSS)
- Social Welfare and Development Officer
- Social welfare promotion/purposes
- Socialized housing
- Software
- Soil and water conservation
- Soliciting
- Sotto Law
- Source person
- Space Science and Technology Applications
- Special Account in the General Fund (SAGF)
- Special purpose education assistance
- Specific energy consumption
- Speech
- Speech language pathologist
- Speech language pathology
- Speed limiter
- Stalking
- Standardized targeting system
- Standards and competencies
- State of calamity
- State universities and colleges (SUCs)
- State-run technical-vocational institutions
- Statement cut-off date
- Statement of account or billing statement
- Statement of affairs
- Stigma
- Strategic goods
- Strategic Trade Management Act
- Strategic Trade Management Office (STMO)
- Strict nature reserve
- Student Fare Discount Act
- Student loan
- Student-athlete
- Student-Athletes Protection Act
- Stunting
- Sub-transmission lines
- Sub-transmission system
- Submission of an electronic document
- Subports of entry
- Subscriber
- SUCs Land Use Development and Infrastructure Plan (LUDIP) Act
- Supervening event
- Supplementary card or extension card
- Support
- Supported decision making
- Supportive care
- Surety agreement
- Surplus dividends
- Sustainable development
- Sustainable livelihood program
- Sustainable tourism development
- Swallowing disorder
- System operator
- Systemic risk