Increasing worldwide environmental awareness is an encouraging scientific research into the development of cheaper, more environmentally friendly and sustainable construction and packaging materials. Kenaf fibre is a natural fibre which is growing in popularity due environmental issues and its properties as filler. Epoxy is a versatile thermosetting polymer which has a low curing temperature and used in making carbon fibre and glass composites. In this paper the properties of kenaf bast fibre epoxy reinforced composite have been investigated. The effects of alkali surface treatment of the fiber on the composite properties are also investigated. A hand layup method was use to fabricate the test specimens. Generally, all the treated fibre composites performed better than the untreated fibre with an improvement approximately 5% to 10%. Epoxy has the highest tensile strength and flexural strength among all specimens. The 24wt% treated kenaf fibre composites has the highest tensile strength, 27.72MPa and flexural strength, 56.91MPa. The kenaf fiber weight fraction of 40% gave the highest impact strength. The impact strength of the 40wt% kenaf fiber increased 14.3% after alkali treatment.