The Klansmen are a small group of fictional Klu Klux Klan members native to the equally fictional town of South Park - they are often depicted as rather unintimidating (unlike their real-world counterparts) but are almost universally hated and shunned by everyone in the town due to their racist beliefs.

One notable episode that involved the Klansmen as minor antagonists was when Chef objected to the racist town flag that depicted a lynching of an African American - the Klansmen were convinced to vote for the elimination of the flag as everyone else would vote against the elimination out of the fact nobody likes them (thus, in a clever (if immoral) twist they would succeed in their actual goal of keeping the flag and its racist message).