Background:Chronic ankle instability is associated with deficits in proprioception and altered plantar loading patterns. Ankle taping is commonly used as a preventive and rehabilitative intervention for this condition and may influence proprioception and plantar impulse. Therefore, the purpose of the present study was to investigate the effects of elastic and non-elastic taping, applied using the Low-Dyeand High-Dye technique approaches, on ankle joint proprioception and plantar impulse across ten plantar regions during running in individuals with chronic ankle instability. Materials and Methods: This semi-experimental repeated-measures study involving 36 athletes with chronic ankle instability. Participants were assessed under five conditions: no tape, Low-Dye non-elastic tape, High-Dye non-elastic tape, Low-Dye elastic tape, and High-Dye elastic tape. Ankle dorsiflexion and plantarflexion proprioception were evaluated using the joint position reproduction test. Plantar impulse across ten plantar regions during running was measured using a Footscan pressure platform. Data were analyzed using repeated-measures ANOVA and Bonferroni post hoc tests at a significance level of P < 0.005. Results: Both High-Dye and Low-Dye elastic taping significantly reduced proprioceptive error compared with the no-tape condition (P < 0.001). In addition, High-Dye non-elastic taping significantly increased proprioceptive error during plantarflexion (P = 0.002). Regarding plantar impulse, the greatest changes were observed in the fourth metatarsal, fifth metatarsal, and midfoot regions. Elastic taping, particularly the High-Dye technique, significantly reduced plantar impulse in these regions (P < 0.005). Conclusion: Elastic taping may be a more effective option for functional management in individuals with chronic ankle instability by reducing joint position sense error and reducing loading in the lateral plantar regions. In contrast, High-Dye non-elastic taping may negatively affect proprioceptive function.