<p>Covalent organic frameworks (COFs) and TiO₂ nanotube arrays (TNTAs) have emerged as viable building blocks for solar-driven photocatalysis, owing to their distinct yet compatible structural and electronic properties. COFs offer consistent porosity, regular crystalline architectures, and modifiable band gaps through the intentional choice of organic linkers, enabling capable light absorption and molecular transport. Meanwhile, TNTAs provide uniformly oriented channels, significant area-to-volume ratios, and oriented conduction paths, which collectively enhance charge separation and reduce recombination rates. Integrating COFs and TNTAs into semiconductor-based photocatalysts creates closely interfaced heterojunction interfaces that leverage enhanced charge alignment and mutual enhancement, resulting in extended light harvesting, faster interfacial charge transfer, and greater photostability. This mini review evaluates recent advances in COF–TNTA composite design, synthesis strategies, and structure–function relationships, reports performance values across diverse systems, and discusses ongoing issues and potential developments for applicable, improved photocatalytic applications.</p> Graphical Abstract <p>This mini review explores the integration of covalent organic frameworks (COFs) and TiO₂ nanotube arrays (TNTAs) in solar-driven photocatalysis. COFs provide tunable porosity and bandgaps, while TNTAs enhance charge separation through their structured channels and large surface areas. These integrations into semiconductor-based photocatalysts improve light absorption, charge transfer, and photostability. </p> <p></p>