The Hunter 25 is an American trailerable sailboat, designed by and Bob Seidelmann and first built in 1972. The original Hunter 25, sometimes called the Mark I, had a wedge-shaped cabin trunk, but a square, "box top" Mark II version was also produced. A newly designed Hunter 25 was introduced in 2005 and is often referred to as the Hunter 25-2 to differentiate it from this design.