page_title: Mark Harmon
hierarchical_section_title: Mark Harmon
caption_attribution_description: English: American actor Mark Harmon photographed by Jerry Avenaim for TV Guide in 2005.
context_page_description: Mark Thomas Harmon is an American actor. He has been acting since the 1970s. Since 2003, he has played Gibbs on the CBS crime series NCIS and Ryan in Freaky Friday.
context_section_description: Mark Thomas Harmon (born September 2, 1951) is an American actor. He has been acting since the 1970s. Since 2003, he has played Gibbs on the CBS crime series NCIS and Ryan in Freaky Friday.
caption: Mark Harmon,  photographed by Jerry Avenaim 2005
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