Hypothetical black hole may refer to:
- Micro black hole, a microscopic black hole proposed to have formed in the early universe
- Intermediate mass black hole, a black hole of a mass between a stellar mass black hole and a supermassive black hole
- Direct collapse black hole: a black hole formed from the collapse of hydrogen, rather than from a star
- Primordial black hole, a black hole that might have formed in a similar fashion to a star during the Universe's earliest epochs
- Extremal black hole, the smallest possible black hole that could exist while rotating at a specific speed
- White hole, the opposite of a black hole; a white hole continuously expels matter
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