The Hunter Sonata 7 is a 7 m (23 ft) small racer-cruiser yacht built in Britain from 1976 to 1990 by Hunter Boats Limited (now British Hunter). The twin-keeled version is known as the Hunter Duette.

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The Sonata was designed by David Thomas, and is a One-Design, Cruiser-Racer Class. It has a glass-fibre hull, with a low-profile glass-fibre deck, a Bermuda rigged aluminium mast, and an iron keel (or keels). It has a relatively large sail area and the rig is a fractional one. When fitted for cruising it has four berths, with two further occasional bunks. Mechanical power is provided by a demountable outboard motor mounted on a sliding bracket on the port side of the transom.

The Sonata was built in several forms, with a fin keel, a lifting keel, and as a bilge keeler (with twin keels), when it was called the Hunter Duette. The Duette was fitted out for cruising rather than racing. The Duette was also available with a lifting keel. The same hull was used later with different deck mouldings for other models, including the Hunter Horizon 23. The 6 m (20 ft) Hunter Medina is a scaled-down trailer sailer version of the Sonata design.

• Length (LOA): 6.90 m
• Length on waterline: 5.60 m
• Beam: 2.60 m
• Sail area: 19.5 m²
• Draught: 1.37m (fin keel)
• Weight: 1115 kg

The Sonata is a National class in the United Kingdom and is raced across the country. The class is governed by the National Sonata Association in conjunction with the Royal Yachting Association.