Political trust is a cornerstone of political survival and development. This paper makes use of data from the 2006 AsiaBarometer Survey to examine the level of political trust in Hong Kong and Taiwan. It finds that the people of Hong Kong have a high level of trust in their government and judiciary, but a relatively low level of trust in their legislature. In contrast, the Taiwan people have a lower level of trust in all of their executive, judicial, and legislative branches, reflecting a serious problem with political confidence in Taiwan. A further analysis shows that institutional factors such as ratings of government performance, life satisfaction, and satisfaction with democratic rights and freedoms, and cultural factors such as interpersonal trust, post-materialism, and traditionalism have varying degrees of effect on the different domains of political trust in Hong Kong and Taiwan, but institutional factors appear to be more powerful than cultural factors in explaining the experiences of both societies.