Kidney transplant recipients (KTRs) have increased incidence of de novo cancers. After having undergone treatment for cancer with curative intent, reducing the overall immunosuppressive load and/or switching to an alternative drug regimen may potentially be of great benefit to avoid cancer recurrence, but should be balanced against the risks of rejection and/or severe adverse events. The TLJ (Transplant Learning Journey) project is an initiative from the European Society for Organ Transplantation (ESOT). This article reports a systematic literature search undertaken by TLJ Workstream 3 to answer the questions: (1) Should we decrease the overall antirejection therapy in potentially cured post-kidney transplant cancer (excluding non-melanoma skin cancer)? (2) Should we switch to mammalian target of rapamycin inhibitors (mTORi) in potentially cured post-kidney transplant cancer (excluding non-melanoma skin cancer)? The literature search revealed insufficient solid data on which to base recommendations, so this review additionally presents an extensive overview of the indirect evidence on the benefits versus risks of alterations in immunosuppressive medication. We hope this summary will help transplant physicians advise KTRs on how best to continue with anti-rejection therapy after receiving cancer treatment with curative intent, and aid shared decision-making, ensuring that patient preferences are taken into account.