故意犯规（Flagrant foul），也称为恶意犯规，是篮球比赛中严重的侵人犯规行为。如果犯规的动作被判定为“不必要”或“过度”，有可能对被犯规球员造成伤害，则会被判定为恶意犯规。

普通犯规会被判罚给予被犯规方球权，当犯规积累到一定次数之后给对被犯规方罚球的机会，罚球结束后犯规方拥有球权。但恶意犯规会被判罚“两罚一掷”，即给被犯规方发球的机会，罚球结束后被犯规方仍持有球权，因此是相当严厉的惩罚。

并非所有的有意犯规都是“故意犯规”。如果犯规动作是有意为之，但没有伤害性，则只会被判定为普通犯规而非恶意犯规，比如在比赛最后阶段比分胶着时的战术犯规和骇客战术。

In basketball, a flagrant foul is a serious personal foul. A foul is considered flagrant when it involves excessive or violent contact that could injure the fouled player. A flagrant foul may be unintentional or purposeful; the latter type is simultaneously known as an "intentional foul" in the NCAA. However, most intentional fouls are not considered "flagrant" and are performed safely as a necessity for time management.