Palm Oil Fuel Ash (POFA) is a biomass produced from palm oil industries. POFA is known to contain a high amount of silica and has been proven by XRF spectroscopy, in which the silicon dioxide content is 72.63%. In this study, silica was synthesised from POFA. To extract the silica, POFA was fused with alkaline agent (Na2CO3) before mixing with Cethyltrimetyl Ammonium Bromide (CTAB) and Sulphuric Acid (H2SO4). Sodium silicate solution from the fusion was used as silica precursor replacing conventionally used silica source, Tetraethoxilane (TEOS). XRD pattern showed that raw POFA dominantly consists of silica. Meanwhile, FTIR analysis of the synthesised silica exhibited spectra bands at 3393 cm-1, 1635 cm-1, 1028 cm-1 and 787 cm-1 that corresponded to the functional groups of Si-O and O-H. Thus, it could be concluded that silica was successfully extracted from POFA by the alkaline fusion method.