Background: The COVID-19 pandemic had an impact on many risk and protective factors associated with suicide. Aims: The aim of this study was to identify pandemic-related factors associated with suicidal ideation in the two European countries, Lithuania and Poland, amid the COVID-19 pandemic. Method: The sample comprised 2,459 participants in both countries; 57.2% of the respondents were female. The Mage of the participants was 43.45 years (SD = 15.91). Pandemic-related stressors and adjustment problems were measured to assess associations with suicidal ideation. Results: High levels of adjustment problems, loneliness, and burden due to staying at home more during the COVID-19 pandemic were significantly associated with suicide ideation in both Lithuania and Poland. Limitations: This was a cross-sectional online study with different recruitment approaches in the two countries. Conclusion: Adjustment problems, loneliness, and stressors related to staying at home more could be important targets for suicide prevention amid the pandemic.
