Lakeside Marina is a Full Service marina located on the Fox River in Oshkosh, WI serving all your boating needs in Northeast Wisconsin, Milwaukee, Madison, Green Bay, Appleton and beyond. We offer prompt, careful service dedicated to making it right. Lakeside Marina sells new and used boats, parts & accessories, brokerage sales, storage, shrink wrapping and winterization on the Lake Winnebago system, consultation, warranty repairs and more.