Rice hull, an under-utilized agricultural waste, is always employed foe low value purposes such as fuel. Hull of pigmented rice (Oryza sativa L., cultivars Sangyod) was used to produce rice hull extracts, and their antioxidant activities were observed. Initially, the effective conditions to prepare rice hull extracts were established by comparing enzyme- and ethanol-aided extraction methods. The extractor solvents – deionized water with Viscozyme-L (0.5 and 1% by weight of rice hull) at pH 6.25 and ethanol (concentrations of 50, 65, and 75%, volume per volume) – were mixed with rice hull (ratio of rice hull to solvent was 1:10, weight per volume). The mixtures were heated at 50C for 0-5 hours. The extractor solvent and heating time influenced the total phenolic content (TPC) and antioxidant activities of the extracts. Generally, the TPC increased with increased extraction time. Using enzyme, a higher enzyme concentration effected an increase in the TPC and the antioxidant activities of the extracts. Ethanolic extraction was more efficient at recovering phenolic compounds than the enzyme-aided means. The extracts exhibited antioxidant activities through both primary and secondary mechanisms and their antioxidant abilities coincidentally increased with the TPC. Extraction using 65% ethanol for 2 hours could provide rice hull phenolic extracts (RHPE) with the highest TPC and antioxidant activities as indicated by radical inhibition effects, the reducing power and the ferrous chelating ability (P