A list of unsolved problems may refer to several conjectures or open problems in various fields:
- Unsolved problems in artificial intelligence
- Unsolved problems in chemistry
- Unsolved problems in computer science
- Unsolved problems in economics
- Unsolved problems in linguistics
- Unsolved problems in mathematics
- Unsolved problems in neuroscience
- Unsolved problems in philosophy
- Unsolved problems in physics
- Unsolved problems in statistics