King's College London Centre for Statecraft and National Security:

Runs the Engelsberg Applied History Program and an Applied History Undergraduate Fellows program.

https://www.kcl.ac.uk/research/centre-for-statecraft-and-national-security

History & Policy: 

Publishes historical research online and connects historians with policymakers and media.

https://historyandpolicy.org/

Utrecht University Applied History Conference:

https://appliedhistory.sites.uu.nl/

Belfer Center Applied History Project:

Harvard-based Applied History center focused on the production and use of historical thinking in policymaking.

https://www.belfercenter.org/programs/applied-history-project