<p>Hydrogen-bonded organic frameworks (HOFs) represent a novel class of porous crystalline materials, constructed by linking organic building blocks through hydrogen-bonding interactions. Characterized by well-defined and tailorable architectures, mild synthetic conditions, facile self-healing, and regenerative capabilities, HOFs have garnered substantial attention across diverse research domains, with particular prominence in photocatalysis. This review systematically summarizes the key merits of HOFs and their applications in photocatalytic systems, encompassing CO₂ reduction, hydrogen evolution, hydrogen peroxide generation, and organic transformation reactions. A specific emphasis is placed on analyzing the structure-performance relationships underpinning their catalytic activities. Finally, future research directions for HOFs are discussed, along with the challenges inherent in their practical implementation for photocatalytic applications.</p>