A list of unsolved problems may refer to several conjectures or open problems in various fields. The problems are listed below:
- General
- Unsolved problems in linguistics
- Unsolved problems in economics
- Unsolved problems in mathematics
- Unsolved problems in philosophy
- Unsolved problems in physics
- Unsolved problems in chemistry
- Unsolved problems in neuroshcience
- Lists
[[Category:Lists of unsolved problems