The Katahdin is a historic steamboat berthed on Moosehead Lake in Greenville, Maine. Built in 1914 at the Bath Iron Works, she at first served the tourist trade on the lake before being converted to a towboat hauling lumber. She was fully restored in the 1990s by the nonprofit Moosehead Maritime Museum, and is again giving tours on the lake. One of the very few surviving early lake boats in Maine, and the oldest vessel afloat built at Bath, she was listed on the National Register of Historic Places in 1978.