Aims: To assess the effectiveness of community-based alcohol brief interventions (ABI) implemented by community-health workers with and without motivational talks (MT) by former drinkers, in reducing harmful and hazardous alcohol consumption.Methods: We conducted a three-arm quasi-experimental study (one control and two intervention groups) between May and December 2015 in Kakamega County, Kenya. Participants were hazardous or harmful alcohol drinkers with an Alcohol Use Disorders Identification Test (AUDIT) score of 8-19 at baseline. One intervention group received only ABI while the other received ABI + MT. The interventions' effects on AUDIT scores were analysed using linear mixed models. Logistic regression was used to analyse the interventions' effects on low-risk drinking (AUDIT score <8) after 6 months.Results: The study included 161 participants: 52 in the control group, 52 in the only ABI group and 57 in the ABI + MT group. The mean AUDIT scores were lower in the intervention groups at 1, 3 and 6 months post-intervention; the ABI + MT group showed a greater reduction. The mean AUDIT scores over a 6-month period were lower in both intervention groups compared with the control group. The odds of low-risk drinking were almost two times higher in both intervention groups than in the control group, although the effect of only ABI on low-risk drinking was not significant.Conclusions: ABI + MT and only ABI were associated with a reduced mean AUDIT score among hazardous and high-risk drinkers in this resource-limited setting. ABI + MT was also associated with low-risk drinking in this population.Short summary: Community-based alcohol brief interventions implemented by community-health workers accompanied by motivational talks by former drinkers were associated with reduced hazardous and harmful alcohol consumption in a rural setting in western Kenya.