This study aimed to examine the effect of repeated anodal cerebellar transcranial direct current stimulation (ctDcS) on learning a split-belt treadmill task. thirty healthy individuals randomly received three consecutive sessions of active or sham anodal ctDcS during split-belt treadmill training. Motor performance and strides to steady-state performance were evaluated before (baseline), during (adaptation), and after (de-adaptation) the intervention. the outcomes were measured one week later to assess absolute learning and during the intervention to evaluate cumulative, consecutive, and session-specific effects. Data were analysed using linear mixed-effects regression models. During adaptation, there was no significant difference in absolute learning between the groups (p > 0.05). During de-adaptation, a significant difference in absolute learning between the groups (p = 0.03) indicated slower de-adaptation with anodal ctDcS. pre-planned secondary analysis revealed that anodal ctDCS significantly reduced the cumulative (p = 0.01) and consecutive-session effect (p = 0.01) on immediate adaptation. There were significant cumulative (p = 0.02) and session-specific effects (p = 0.003) on immediate de-adaptation. Repeated anodal ctDCS does not enhance motor learning measured during adaptation to a split-belt treadmill task. However, it influences the maintenance of learnt walking patterns, suggesting that it may be beneficial in maintaining therapeutic effects. Cerebellar transcranial direct current stimulation (ctDCS), a non-invasive brain stimulation technique, has the potential to become a neuro-rehabilitation tool to facilitate therapy-induced recovery in people with brain lesions 1,2. Various neuro-physiological studies 3-5 have demonstrated that ctDCS is capable of altering the excitability of the cerebellum, a critical structure in error-driven motor learning 6-8. There is evidence of improved gains in motor performance up to 48 h after a single application of anodal ctDCS 9,10. However, evidence of its ability to induce long-lasting changes in motor performance with multiple sessions of stimulation is limited 11,12. This study aimed to elucidate the effect of three consecutive sessions of anodal ctDCS on motor learning of a novel treadmill walking task in healthy individuals. Motor learning is an internal process associated with practice or experience, which results in the long-lasting acquisition of skilled motor performance 13. To examine the effect of an intervention on motor learning, evaluation of motor performance more than 24 h after the intervention is required 13. This is because the transient effects of the intervention dissipate, but the relatively permanent effects remain at the follow-up evaluation reflecting learning. Such learning is fundamental for acquiring new motor skills and adapting to changing environments in our daily lives. Motor learning is commonly investigated in the laboratory through motor skill and motor adaptation paradigms. Motor skill training paradigms often use novel or compl...