Hanson v. Denckla, 357 U.S. 235 (1958), was a case decided by the Supreme Court of the United States regarding personal jurisdiction in the context of assets held in trust.

A family trust was created by Mrs. Donner, who lived in Pennsylvania.

Donner later changed her state of domicile upon moving to Florida where she eventually died.

The will was admitted to probate in Florida, and the court addressed the question of whether the Florida court or the Delaware trustee had jurisdiction over the trust.

The only contact with Florida was the fact that Donner moved there, which was ruled insufficient to support jurisdiction.