Brigadier-General Samuel Waldo (August 7, 1696 – May 23, 1759) was a wealthy merchant, land speculator, soldier and political figure in the Province of Massachusetts Bay. He was born in Boston, the son of Jonathan Waldo and Hannah Mason. In 1722, he married Lucy Wainwright. In 1730, he purchased a 17th-century title to a large tract of land in Nova Scotia with the intent of establishing a colony there; the title did not stand up when he proposed this plan to the authorities in England. A one-time business partner of Colonel Thomas Westbrook, Waldo acquired a large tract of land near the Penobscot and Muscongus rivers in what is now Maine where he settled a group of German families in 1740.