In this chapter, we argue that the COVID-19 pandemic acted as a collective transition and as such affected the contents and organization of autobiographical memory. Although major life transitions are known to affect autobiographical memory organization, the onset of the COVID-19 pandemic presented a unique case that both aligns with and challenges the premises of Transition Theory. Despite its global scale and historical significance, the pandemic did not bring about the catastrophic disruptions associated with major collective transitions. Nonetheless, it marked the beginning of a distinct autobiographical period, as evidenced by its frequent use as a temporal landmark and the increased recall of autobiographical memories around its onset. We begin by outlining the concepts within Transition Theory and revisit the theory in light of the recent findings about the pandemic’s impact on autobiographical memory. We propose that the pandemic’s pervasive presence in media, social environment, and daily life contributed to the changes in how autobiographical memories are organized. We conclude by discussing how this work opens up new questions about the role of collective events in influencing the structure of autobiographical memory.