The aim of the study was to examine the relationship between attitudes to Wikipedia and six personality traits (extraversion, emotional stability, openness to experience, conscientiousness, agreeableness and cynical hostility) among Polish students. Conscientiousness was negatively related to editing Wikipedia and positive opinions about Wikipedia. Cynical hostility was not related to any specific attitude to Wikipedia. Extraversion and openness to experience were positively related to positive opinions on Wikipedia. The results are inconsistent with previous work and future studies should clarify the divergences.