David-Vital Landry (July 14, 1866 – December 18, 1929) was a medical doctor, farmer and political figure of Acadian descent in New Brunswick, Canada.
He represented Kent County in the Legislative Assembly of New Brunswick from 1908 to 1917 as a Conservative member.
He was born in Memramcook, New Brunswick, the son of Vital J. Landry and Mathilde D. Cormier, and was educated at the College of Saint Joseph and the Université Laval.
Landry served on the province's Executive Council as Commissioner for Agriculture, and then Provincial Secretary-Treasurer (Minister of Finance).
He died two years later in Bathurst at the age of 63 and was buried in the St. Jean Baptiste Roman Catholic Cemetery in Bouctouche.