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Double doctorate

You may choose to do a double doctorate at Leiden University. However, you may only study for a PhD based on collaboration with another university or institution if the Doctorate Board has granted you permission to do so.

A double doctorate, or co-tutelle, means that you earn a PhD from Leiden University and another Dutch or foreign university with one dissertation. The PhD programme is provided jointly by Leiden University and the partner university. The PhD ceremony must take place at Leiden University. You are awarded two degrees at the end of the programme, one from each institution.

Double doctorate model contract

If you wish to do a double doctorate, you must have both universities sign a contract.

• Download the double doctorate model contract

After the contract has been drawn up together with the supervisors at both universities, please send it to the Graduate School Office. After a final check, the Dean of the Graduate School will be notified and the agreement will be submitted for approval to the Doctorate Board (signature of Rector Magnificus is required). The agreement will also be signed by the candidate, the supervisor(s) and by the representatives of the other university.

Please note: The signing of the double doctorate contract does not imply admittance of the PhD candidate to the Graduate School of Humanities. Once the agreement has been signed, the prospective PhD candidate still has to apply for admission to the Graduate School.