Through examining ethnographic material alongside a forum discussion on the website ultrastifo, this paper relates fan solidarities occasionally asserted between certain members of Green Brigade (Celtic FC) and the Bad Blue Boys (NK Dinamo Zagreb) to what I term fan cosmologies. I first describe my theoretical positioning with respect to fan activist groups and initiatives, before making some notes concerning the two fan groups’ political contexts. I then consider the empirical material, concluding with a brief discussion of fan cosmologies as an approach to studying football fan groups anthropologically.
