起源谬误（genetic fallacy）或基因谬误是一种不相干的谬误，系针对论述的起源攻击，而非针对该论述本身攻击。例如攻击提出论证的人、攻击某论证起于落后的年代、根据某个字词的词源断言其意义等等。

The genetic fallacy (also known as the fallacy of origins or fallacy of virtue) is a fallacy of irrelevance where a conclusion is suggested based solely on someone's or something's history, origin, or source rather than its current meaning or context. This overlooks any difference to be found in the present situation, typically transferring the positive or negative esteem from the earlier context.