Magelang Regency has been designated as a pilot area for organic rice development, supported by an integrated institutional framework that includes farmer training, extension services, and infrastructure development. This study analyzed the technical efficiency (TE), allocative efficiency (AE), and economic efficiency (EE) of organic rice farming in Magelang Regency, within the context of a government-supported organic farming development program. A stochastic frontier analysis (SFA) was applied to cross-sectional data at farm level to estimate production efficiency and to examine the role of socioeconomic factors in explaining inefficiency. The results indicated relatively high average TE among organic rice farmers. However, estimated inefficiency components were small and statistically insignificant, suggesting that variations in output were largely influenced by stochastic and exogenous factors rather than by technical inefficiency. AE was found to be more moderate, leading to lower EE despite favorable technical performance. This pattern implies that considerations of cost allocation and input price remain important constraints in organic rice farming systems. Socioeconomic characteristics such as age, education, farming experience, and participation of farmer group were associated with lower estimated inefficiency. The findings contribute expectedly to the efficiency of literature on organic agriculture, while offering policy-relevant evidence for improving the design and implementation of organic rice development programs.