Hydrocotyle vulgaris commonly known as marsh pennywort is a creeping mat-forming plant of wet areas such as fens and bogs. It has been introduced in the Philippines and propagated by seeds, cutting of mature stems of by layering. H. vulgaris has been known as a plant with medicinal attributes. Several species under genus Hydrocotyle possess mild diuretic, anti-rheumatic, dermatological, peripheral vasodilator and vulnerary properties. Despite all this, a phytochemical screening of H. vulgaris in the Philippines has never been carried out. This study is limited only to the screening of the nine secondary metabolites found in the crude ethanolic leaf extracts of the marsh pennywort, H. vulgaris. The nine secondary metabolites were considered in this study because so far they have been reported to occur in other Hydrocotyle species such as H. asiatica. The study revealed the presence of secondary metabolites in H. vulgaris such as flavanoids, reducing sugar, saponins, steroids, tannins and terpenoids. No alkaloids, anthraquinones and cyanogenic glycosides were detected. Detection of secondary active metabolites in H. vulgaris may confirm the various therapeutic claims that this plant can treat ailments of the heart and gastrointestinal problems caused by endoparasites.