在数学中，奇异点（singularity）或奇点，是数学对象中无法处理的点。一般来说，可以分成两种状况：

In mathematics, a singularity is in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability. See Singularity theory for general discussion of the geometric theory, which only covers some aspects.