John Francis Smith, more commonly referred to as Ranger Smith (and known as Mr. Ranger by Yogi and Boo-Boo), is a fictional park ranger first appearing in the 1958 Yogi Bear cartoon series.^[6] The character is Yogi's main antagonist, and appears in other Yogi Bear series, including Yogi's Gang (1973), Yogi's Treasure Hunt (1985), and Yo Yogi! (1991),^[7] as well as the 2010 live-action Yogi Bear film. The cartoon character has been primarily voiced by Don Messick and Greg Burson.^[7]

Ranger Smith, together with similar children's characters such as Ranger Rick and Disney's Ranger Woodlore, has become a stereotype of the American park ranger. This had led to some complaints from the park rangers about their job being misunderstood and not treated seriously by the public, as these stereotypes fail to recognize some park rangers are law enforcement officers.^[8][9]

• Ranger Smith has appeared in some episodes of Yogi's Gang, in which he is seen with blond hair instead of black.
• Ranger Smith was a supporting character in Yogi's Treasure Hunt.
• Ranger Smith appeared once (Quebec/Baghdad) in Scooby's Laff-A-Lympics.
• Ranger Smith made a guest cameo in "The Story Stick" from A Pup Named Scooby-Doo.
• Ranger Smith appeared in two television films, which were part of the Hanna-Barbera Superstars 10 series: Yogi's Great Escape, and Yogi and the Invasion of the Space Bears.
• In Yo Yogi!, Ranger Smith is shown as Officer Smith (voiced by Greg Burson), who is a security guard at Jellystone Mall and often arrests the bad guys upon their defeat.
• Ranger Smith made a cameo appearance in I Am Weasel episode "I Am My Lifetime", being jailed.
• Ranger Smith has become a starring character in parody shorts produced by the now-defunct animation company Spümcø, including Boo Boo Runs Wild, A Day in the Life of Ranger Smith, and Boo Boo and the Man. In those appearances, Ranger Smith was voiced by Corey Burton.
• Various designs for Ranger Smith made nonspeaking appearances in the Harvey Birdman, Attorney at Law episode "Identity Theft", referencing the noticeable inconsistencies the design experienced in the original cartoon.
• Ranger Smith appeared in the Robot Chicken episode "President Evil", voiced by Seth Green. In a movie trailer segment that featured Yogi and Boo Boo, Ranger Smith tells the sheriff that the cops will not catch Yogi, since he is smarter than the average bear. He was later featured in the "Power Forest Rangers" sketch of the show's 100th episode "Fight Club Paradise", voiced by Jamie Kaler.
• Ranger Smith is portrayed by actor Tom Cavanagh in the Yogi Bear feature film, released on December 17, 2010.
• Ranger Smith can be briefly spotted in a Metlife commercial that aired in 2012.
• Ranger Smith appears in the HBO Max series Jellystone!, voiced again by Jeff Bergman. He appears as the administrator of Jellystone Hospital.
• Ranger Smith appeared in the Teen Titans Go! episode "Warner Bros. 100th Anniversary".

From the time of the character's debut until 1994, Ranger Smith was voiced by Don Messick, using his natural voice. His last performance as the character was in Yogi the Easter Bear.

In Yo Yogi!, the character was known as Officer Smith and voiced by Greg Burson.

In the Spümcø shorts, Ranger Smith is voiced by Corey Burton.

Although more famous for his work in the Scooby-Doo franchise, Scott Innes briefly voiced Ranger Smith, as well.^[3]

In the Yogi Bear film, the character is portrayed by Tom Cavanagh.^[10][11]

• List of Hanna-Barbera characters
• List of Yogi Bear characters
• The Yogi Bear Show
• The New Yogi Bear Show
• Yogi's Treasure Hunt