The utilization of photocatalytic nitrogen fixation stands out as a potent technology in the development of ammonia using atmospheric nitrogen, a pivotal stride toward fostering a green economy. Recently, bismuth oxyhalides (BiOX) have emerged as promising catalysts for the conversion of nitrogen into ammonia through photocatalysis. The predominant role of BiOX materials is indicated by their distinctive electronic configuration and optical characteristics. This review encapsulates the recent advancements in BiOX-based materials toward photocatalytic nitrogen fixation. This review also delves into several aspects, such as sources and characteristics of nitrogen, photocatalytic nitrogen fixation mechanisms, and strategies for structural optimization of the BiOX to bolster the catalytic performance. The discourse culminates with a forward-looking perspective that underscores both the potential and hurdles associated with BiOX-based photocatalysts toward nitrogen fixations.