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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 MS Stena Nordica, which also operates to Dublin and Stena Explorer, which operates to Dún Laoghaire.
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.