The John W. Ballard House is a historic building located in central Davenport, Iowa, United States. It has been listed on the National Register of Historic Places since 1983.

John W. Ballard began living here in 1884, so he was probably not the person who had the house built. Ballard and his cousin, E.S. Ballord were partners in a pharmacy named E.S. Ballord & Co. In 1903 E.S. retired and John Ballard and his son continued the business as Ballard Drug & Dental Co.

Built in 1871, the home is one of the oldest surviving buildings in Davenport's upper Main Street area—if not the oldest. A Victorian Greek Revival design with turn-of-the-century neoclassical modifications, the house was reportedly "the most commanding structure in the neighborhood" at the time of construction. The main façade of the house faces a large yard to the south. It originally featured a single-story projecting window bay beside the main entrance. Sometime between 1892 and 1910 a two-story semi-circular bay and a porch that followed the bay was added. The two-story house is composed of brick and sits on a stone foundation. The addition is composed of wood construction.

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