Research interests: media and communication policy (and its guiding principles and ideologies in particular), media freedom and pluralism, digital rights, democracy and the public sphere.
- Communication Rights in the Age of Digital Disruption (Academy of Finland 2019-2022)
- Media pluralism and online news (Australian Research Council, 2018-2020)
- Karppinen, K (2019). Freedom without idealization. Non-ideal approaches to freedom of communication. Communication Theory 29(1): 66-85
- Karppinen, K & O. Puukko (2020). Four Discourses of Digital Rights. Journal of Information Policy 10(2020): 304-328.