The majority of Open Government Data (OGD) initiatives around the world have focussed on the executive branches of government, exploring financial, infrastructure and administrative datasets. A smaller number have looked at legislative open data. However, open data in the judicial branch has gone relatively unexplored. In this study, CIPPEC explore the the openness of judiciary branch data and it’s impact through a comparative study across three Latin American countries. The study used a layered mixed-method exploratory design, triangulating findings from a technical assessment of data judiciary websites, interviews with key informants and field-work. The study worked through descriptive, diagnostic, analytical and prospective phases, in order to generate robust policy-relevant recommendations.