Young people frequently use Wikipedia, but their trust concerning the collaborative encyclopedia is not considerable, and Wikipedia's reputation is still controversial. How does gender influence trust in this online resource? According to the selectivity model, females are more cautious when they evaluate information sources and more afraid of taking informational risks than males. A survey conducted among 841 young people aged 11 to 25 years shows the existence of gendered differences about the epistemic trust in Wikipedia, sensitivity to its reputation, and informational knowledge about its subjects. Nevertheless, the level of education has a great effect on the attitudes toward this website.