The Municipal Departments of Tinambac are headed by the following.

Hon. Rodel A. Velarde
Municipal Vice Mayor

Mr. Benedicto D. Besa
Secretary to the Sanguniang Bayan

Engr. Diego E. Bayonito
Municipal Planning Development Officer

Mr. Joseph M. Bañes
Municipal Budget Officer

Engr. Reynaldo A. Rivera
Municipal Agricultural Officer

Engr. Berlin H. Dimaculangan
Municipal Engineer

Dr. Francisco B. Severo IV, MD
Municipal Health Officer

Mr. Jerry G. Pasiona
MGOO V – DILG

Dr. John Paul E. Reazon, MD
Chief of Hospital

Mrs. Nilda P. Evalla
Municipal Social Welfare & Development Officer

Mrs. Ma. Teresa H. Betito
Municipal Treasurer

Dra. Judy Z. Reforma, MD.
Rural Health Physician

Mr. Aida A. Hugo
OIC Municipal Accountant

Mrs. Raquel T. Hiloma
Municipal Assessor

Mrs. Jesus L. Caceres
Municipal Civil Registrar

Mrs. Joy T. Besa
Hospital Administrator

Mr. Jose Ariel B. Abordo
General Services Officer