Captain Kidd, Jr. is a 1919 American silent film produced by and starring Mary Pickford and directed by William Desmond Taylor.

[1] As described in a film magazine,[2] the grandfather of Willie Carleton (Gordon) put his will in a book about pirates and buried treasure, and the book is purchased by a second-hand store run by Angus MacTavish (Aitken), who lives with his granddaughter Mary (Pickford) and a young author named Jim Gleason (MacLean).

The suspicions of neighbors and the constable are aroused, and the lawyer and private secretary arrive and attempt to stop the digging.

A box is found, and when opened contains a note saying that the treasure mentioned in the will is the good health Willie Carleton will have from all of the exercise spent digging.

Mary, who bought the farm with money left to her by her mother, sells it for a profit to a man who plans to run a railroad through it.