Holyhead Marina sits within Holyhead Harbour on the Isle of Anglesey in northwest Wales, offering berths for visiting and resident vessels.

Mariners approaching by boat should call the marina on VHF Channel 37 to arrange a berth; if no reply is received, securing to the landing stage and visiting the office to complete paperwork is the standard procedure.

The marina provides water and electricity on the pontoons, with toilets, showers, and laundry facilities ashore. Security is maintained by 24-hour CCTV and code-controlled gates.

The harbour's unrestricted tidal access and generous fairways make it a popular destination for RYA sailing schools and recreational users including kayakers, divers, anglers, and windsurfers.