<jats:title>Abstract</jats:title><jats:p>Immunological memory is a hallmark of adaptive immunity and facilitates an accelerated and enhanced immune response upon re-infection with the same pathogen<jats:sup>1,2</jats:sup>. Since the outbreak of the ongoing COVID-19 pandemic, a key question has focused on which SARS-CoV-2-specific T cells stimulated during acute infection give rise to long-lived memory T cells<jats:sup>3</jats:sup>. Here, using spectral flow cytometry combined with cellular indexing of transcriptomes and T cell receptor sequencing, we longitudinally characterized individual SARS-CoV-2-specific CD8<jats:sup>+</jats:sup> T cells of patients with COVID-19 from acute infection to 1 year into recovery and found a distinct signature identifying long-lived memory CD8<jats:sup>+</jats:sup> T cells. SARS-CoV-2-specific memory CD8<jats:sup>+</jats:sup> T cells persisting 1 year after acute infection express CD45RA, IL-7 receptor-α and T cell factor 1, but they maintain low expression of CCR7, thus resembling CD45RA<jats:sup>+</jats:sup> effector memory T cells. Tracking individual clones of SARS-CoV-2-specific CD8<jats:sup>+</jats:sup> T cells, we reveal that an interferon signature marks clones that give rise to long-lived cells, whereas prolonged proliferation and mechanistic target of rapamycin signalling are associated with clonal disappearance from the blood. Collectively, we describe a transcriptional signature that marks long-lived, circulating human memory CD8<jats:sup>+</jats:sup> T cells following an acute viral infection.</jats:p>