Hafan Pwllheli is the marina and harbour facility at Pwllheli on the Llŷn Peninsula, Gwynedd, Wales, where the Afon Erch flows into sheltered tidal waters.

It serves as a key access point for boating and water-based recreation on this stretch of the Welsh coast. The harbour offers a concrete boat launch ramp accessible across nearly all of the tidal range, managed by the Harbourmaster.

Berths are available with direction from marina staff, and PWCs are permitted. Showers and toilets are located adjacent to the Harbourmaster's office. Monthly and seasonal tickets provide access to all Gwynedd Council slips.

The town centre, with full provisioning options, lies roughly three-quarters of a mile away.

The marina plays a significant role in the local economy, with operations estimated to support around 200 jobs and contribute approximately £20 million annually to the regional economy.