This is a list of the named geological faults affecting the rocks of Wales.
Many faults may have acted as both normal faults at one time and as reverse or thrust faults at another and may or may not have also incorporated some degree of strike-slip movement too.
There are also a number of 'disturbances', notably in South Wales.
These linear features are a combination of faults and folds - the relative importance of faulting and folding varying along the length of each disturbance.
The following named features comprise both faulting and folding;