Marina Park, Waterfront park in Thunder Bay, Canada

Marina Park is a waterfront space along Lake Superior with docks, boat fueling facilities, walking paths, and a boardwalk connecting different zones. The site includes a skate plaza, children's playground, public restrooms, and restaurants located in a restored railway building.

The site was formerly known as Prince Arthur's Landing until 1883 and marked a turning point in the city's maritime history. This past shaped the location into a central hub for Thunder Bay.

The district takes its name from the former village of Prince Arthur's Landing, renamed Port Arthur in 1883. Summer brings the "Summer in the Parks" concert series, the Thunder Bay Blues Festival, a kite festival and Canada Day celebrations to the waterfront. The restored circa-1900 Baggage Building now houses the Baggage Building Arts Centre public gallery.

The park is easy to walk through and open throughout the year, with facilities operating in all seasons. Visitors can shift between waterfront activities, outdoor play, and sports depending on the season and personal interests.

The splash pad–rink is the public centrepiece of the first phase of a 130-million-dollar upgrade at Prince Arthur's Landing, funded by all levels of government through stimulus projects. Construction was to finish in fall 2010, with minor landscaping in 2011.