Yes this can be done by setting the returnDitinctProperties on the fetchRequest:
request.returnsDistinctResults = YES;
For this to work, you also need to set which properties need to be fetched:
request.propertiesToFetch = @[@"title"];
Fore more details, see Apple's documentation: https://developer.apple.com/library/ios/documentation/DataManagement/Conceptual/CoreDataSnippets/Articles/fetchExpressions.html