<p>Direct-current (DC) energy harvesting has become increasingly important for wearable electronics and sensor platforms, as it eliminates rectification losses and reduces circuit complexity compared to alternating-current (AC) sources. Among emerging approaches, the tribovoltaic effect has attracted significant attention as a direct DC generation mechanism, producing current through interfacial friction at semiconductor or metal–semiconductor junctions. In this review, we summarize recent progress in hybrid tribovoltaic energy harvesters, which integrate tribovoltaic effects with complementary mechanisms such as photovoltaics, piezoelectrics, and moisture-enabled generation. Photovoltaic–tribovoltaic systems demonstrate synergistic enhancement through shared electron–hole pair dynamics, while piezo–tribovoltaic and moisture-assisted hybrids expand functionality under diverse operating environments. We highlight advances in device structures, material designs, and integration strategies, and discuss the remaining challenges of interfacial stability, scalability, and long-term durability. Finally, we provide perspectives on the future directions of tribovoltaic-based hybrid energy harvesting systems as versatile and sustainable power sources for next-generation self-powered electronics.</p>