The Journal of Cosmology and Astroparticle Physics is an online-only peer-reviewed scientific journal focusing on all aspects of cosmology and astroparticle physics. This encompasses theory, observation, experiment, computation and simulation. It has been published jointly by IOP Publishing and the International School for Advanced Studies since 2003. Journal of Cosmology and Astroparticle Physics has been a part of the SCOAP³ initiative. But from 1 January 2017, it has moved out from SCOAP³ agreement.

Journal of Cosmology and Astroparticle Physics is indexed and abstracted in the following databases: