Recent studies have focused on the resurgence of feminist mobilisations facilitated or made visible by the advent of social media. In this paper I focus on the potential of social media to highlight transnational connections between women’s movements and strengthen resistance strategies in times of anti-feminist backlash. After tracing the history of connectivity between Italian feminism and mobilisations developing in the USSR during the first half of the 20th century, I draw the attention on recent feminist mobilisations in Poland and Italy. In order to illustrate the role of social media in the formation of transnational feminist mobilisations, I analyse how the use of Facebook by Italian and Polish feminists highlights the similarity of struggles in the two contexts and allows expressions of mutual solidarity. The focus on these cases is also motivated by the will to draw attention to locations such as Eastern or South Western Europe, which tend to remain on the margins in the feminist debate.