We examine changes in the Big Six personality markers (Extraversion, Agreeableness, Conscientiousness, Emotional Stability, Openness to Experience, and Honesty–Humility) before and after the 2010/2011 Christchurch earthquakes in a longitudinal study of New Zealand residents (N = 3,914). Results show remarkable stability in personality, save for one exception: Those who were affected by the earthquakes evidenced a slight decrease in Emotional Stability over the 2-year test–retest period relative to those unaffected by the earthquakes. These findings indicate that most aspects of personality are resilient following a major natural disaster. The slight decrease in Emotional Stability, however, points to a possible increase in vulnerability to depression and anxiety for those affected by the earthquakes. Our study provides important insights into a central question about stability and change in personality following major life events.