Questions & feedback

We are very interested in your feedback on the CWTS Leiden Ranking 2017. The form below can be used to give comments on the Leiden Ranking or to ask questions concerning the ranking. The form can also be used to request information on products related to the Leiden Ranking.

Postal address

Centre for Science and Technology Studies
Leiden University
P.O. Box 905
2300 AX Leiden, The Netherlands
Tel.: +31 71 527 3909
Fax: +31 71 527 3911

Visiting address

Willem Einthoven Building
Kolffpad 1
2333 BN Leiden, The Netherlands