Please use this link to access publication Abstract This review summarizes the most common potential pathways of neurodevelopmental toxicity due to perinatal exposure to Δ9-tetrahydrocannabinol (Δ9-THC) that lead to behavioral and other adverse outcomes (AOs). This is Part III in a set of reviews highlighting the animal-derived data considered by California's Developmental and Reproductive Toxicant Identification Committee (DARTIC) in 2019. The Hazard Identification Document (HID) provided to the DARTIC included a summary of human, whole animal, and mechanistic data on the neurodevelopmental toxicity of cannabis smoke and Δ9-THC. The literature search for mechanistic data has been updated through 2020. We focus on mechanistic pathways...