The Thinking Healthy Programme is a manualized psychological intervention endorsed by the World Health Organization that uses the principles of cognitive behavior therapy (CBT) to treat maternal depression. THP leverages task-sharing practices with lay healthcare workers to easily incorporate CBT techniques into routine antenatal and post-partum healthcare visits. The Carter Center and the Liberia Center for Outcomes Research in Mental Health (LiCORMH) have adapted THP for the Liberian context and will use this funding to deliver the intervention within Liberia's public health system and validate its impact on maternal depression outcomes.