The ER 2017 Doctoral Symposium will gather together PhD students and academics working in conceptual modeling. The symposium offers PhD students the opportunity to present and discuss their research and to interact with other researchers, experts in the field of conceptual modeling, who can provide feedback on their research. To enable a fruitful discussion, we seek PhD students who are settled in their field but are also still open for valuable feedback. The symposium is open to any topic covered by the main conference and of strong relevance to the ER community.