The COVID−19 pandemic and corresponding measures taken to control it seem to have had negative effects on the well-being of older people. The present study regressed short and long-term loneliness scores on the degree of stringency of epidemic control policies in Europe and in Israel, and on other pandemic-related variables, controlling for a range of possible confounders. The longitudinal sample numbered 18,265 persons, aged 65 and older. The analysis revealed that loneliness rose at both post-outbreak time measurement points. Moreover, stringency was related to change for the worse in loneliness status. Electronic-based communication did not reduce loneliness, while face-to-face contact did. The findings underscore that pandemic-related policy measures have unintended social consequences that need to be addressed.