Background: Being a solid organ transplant recipient is associated with increased risk for infections. Vaccinations are considered potent preventive procedures against numerous infections. Objective: The subject of our study was to assess the vaccination coverage in solid organ transplant recipients remaining under the long-term post-transplant care at the largest Polish transplant center. Material and methods: A questionnaire on realization of vaccinations included in the operative Polish Vaccination Programme was completed by adult recipients of solid organ transplantation during routine outpatient visits. Results: One hundred ten patients were included. In 18% of patients, vaccination against SARS-CoV-2 has never been performed, and booster doses of the vaccine received 47% of patients. 15% of patients reported annual vaccination againts influenza, 30% has been vaccinated against influenza less often than anually, and in 55% vaccination against influenza has never been performed. In 7% of patients, vaccination against diphteria, tetanus and pertussis has been done within recent 10 years. 1 patient (1%) reported vaccination against Streptococcus pneumoniae. No patient reported vaccinations against Haemophilus influenzae, Neisseria meningitidis, zoster, or RSV. Conclusions: Our results show that solid organ transplant recipients are undervaccinated. Urgent actions are needed to improve the current state.