The guest stars on Sergeant Preston included:
- Francis De Sales appeared in five episodes, concluding as Cy Bartok in "The Diamond Collar".
- Kelo Henderson, a future Golden Boot winner who appeared as Pete Hollis in the 1958 episode "Escape to the North".
- Ed Hinton appeared twice in 1956 as Barry Jeffers in "Remember the Maine" and as Lefty "Red" Burke in "The Rookie".
- I. Stanford Jolley guest starred as Sam Haley in "The Fancy Dan" (1956) and as Frisco in "Gold Rush Patrol" (1958)
- Tyler MacDuff appeared as Bill Corey in "Lost River Roundup" in 1957
- John M. Pickard appeared four times in 1956-1957 in different roles, including the role of Red Brody in "Old Ben's Gold".
Season one of the series is scheduled for DVD release on March 17, 2009.
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