New technologies are changing our current understanding of public services. One example of this is the emerging concept, and exploitation of, Open Government Data (OGD). Governments are able to release OGD and, through this action, act as a platform. This Open Government Data Platform allows anyone to use, exploit, and analyze government datasets to co-create new and innovative services which provide public value and empower communities in combination with multiple stakeholders. The aim of this thesis is to explore this new phenomenon and attempt to gain a better understanding of the process in which stakeholders are able to use OGD to co-create these new public services. An exploratory case study is conducted on an ongoing pilot project within Estonia which is co-creating a new public service based on OGD. The case seems to show that in order for OGD driven public service co-creation to occur effectively a new understanding of the role of stakeholders is needed, and that when governments release OGD and act as a platform they inherently become involved in the co-creation of new public services, even if this is not the goal. As a result of the research a general architecture for a co-creation OGD driven public service web application is also derived and presented.