The Morrill-Lassonde House is a historic house on King Street in Boscawen, New Hampshire. The 2.5 story wood frame house was built c. 1769 for Rev. Robie Morrill, and is believed to be the oldest surviving structure in Boscawen. It is also thought to occupy the site of the oldest fortification in the town. Morrill's grandson Bejamin invented the wheelbarrow clock movement in this house. In the 20th century the house was owned by artist Omer T. Lassonde, who donated the house to the New Hampshire Art Association. The house was listed on the National Register of Historic Places in 1984.