This document analyzes whether Wagner's law of public expenditure holds true for Malaysia using time series analysis of secondary data from 1981 to 2007. Wagner's law suggests that economic growth drives increases in public expenditure. The study finds evidence that public expenditure is influenced by economic growth (GDP) and population in Malaysia, providing support that Wagner's law describes Malaysia's economy over the period studied. Regressions show relationships between expenditures and both GDP and population. The conclusion is that Wagner's law of public expenditure holds for the Malaysian economy.