A total of 180,000 people are reported missing in the UK each year – that's one person every 90 minutes. And, while the vast majority are found and reunited with their families, that is not true in every case.
The people listed below all went missing in Wales and have yet to be found. Some have been gone for weeks, other for years.
But, regardless of the length of time, the pain for those left behind to worry and wonder what's become of them never diminishes. They still hope that, one day, their loved ones will turn up or get in touch. You can get more local news and other story updates straight to your inbox by subscribing to our newsletters here.