《Dear Zachary: A Letter to a Son About His Father》is a 2008 American documentary conceived and created by Kurt Kuenne. Kuenne's close friend Andrew Bagby was murdered after Bagby ended his relationship with Shirley Jane Turner.

Kuenne's close friend Andrew Bagby was murdered after Bagby ended his relationship with Shirley Jane Turner. Shortly after she was arrested as a suspect, Turner announced she was pregnant with Bagby's child, a boy she named Zachary. Kuenne decided to interview numerous relatives, friends, and associates of Andrew Bagby and incorporate their loving remembrances into a film that would serve as a cinematic scrapbook for the son who never knew him. As events unfold, the film becomes a sort of true-crime documentary.

In an interview with MovieWeb, Kuenne says that the documentary began as a project only to be shown to friends and family of Andrew Bagby. But as the events unfolded, Kuenne decided to release the film publicly.

Kuenne is donating all profits from the film to a scholarship established in the names of Andrew and Zachary Bagby.