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Stena Adventurer is a large roll on/roll off passenger (ro-pax) ferry operated by Stena Line on its Holyhead - Dublin route. She was launched in 2002 and entered service a year later.
Stena Adventurer is complemented on the Irish Sea by the Stena Superfast X, which also operates to Dublin and Stena Explorer, which formerly operated to Dún Laoghaire.
Stena Adventurer has served on the Irish Sea route Holyhead - Dublin with numerous previous ferries, the first Stena Seatrader, the Stena Seatrader was then replaced by the Stena Nordica (now Malo Seaways operated by DFDS Seaways. In 2015 the Stena Nordica was replaced by the Stena Superfast X, which now operates on the Irish Sea.
Stena Adventurer is the second of two identical ships built by Hyundai Heavy Industries, for Stena Line. Her sister ship is Stena Scandinavica which operates on Stena Line's flagship Gothenburg - Kiel route.