A consultation has started on the future of "underused and poor quality" court and tribunal buildings.
Justice Secretary Michael Gove said the aim was to reduce what he identified as "surplus capacity".
It comes a week after the announcement two magistrates' courts in south Wales would close, saving Â£80,000 in running costs each year.
In total, the government is consulting on plans to shut 91 courts and tribunals in England and Wales.
Courts in Wales under threat:
Eleven courts across Wales are facing closure under new plans announced by the UK government.