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Mark Harmon: Career, Early life & Overview

Thomas Mark Harmon (born September 2, 1951) is an American actor, writer, producer, television director and former football player. He is best known for playing the lead role of Leroy Jethro Gibbs on NCIS.

Language: English [EN]
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Mark Harmon topic overview

The analysis highlights Career, Early life and Overview as prominent areas in the source structure around Mark Harmon.

Related topics
132
Source areas
5
Connected nodes
137
Extracted relationships
34
Concept neighborhoods
29
Bridge connections
137

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Career · 65 topics
Early life · 34 topics
Overview · 20 topics
Personal life · 9 topics
Other activities · 4 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Alma mater
University of California, Los Angeles (BA)
Born
Thomas Mark Harmon (1951-09-02) September 2, 1951 (age 74) Burbank, California, U.S.
Children
2
College
Pierce College (1970–1971) · UCLA (1972–1973)
High school
Harvard-Westlake
Listed height
6 ft 0 in (1.83 m)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Early life

Career

Other activities

Personal life

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Mark Harmon connects Entity context

The extracted context around Mark Harmon shows recurring relationship patterns in the source. For example, Mark Harmon → Built, Coyne, Kate, Last, March, People, Vol Another extracted example is Mark Harmon → Gunnar Nelson (nephew), Kelly Harmon (sister), Kristin Nelson (sister), Matthew Nelson (nephew), Tracy Nelson (niece). Use these groups to spot repeated connection types before inspecting the individual relationships.

Mark Harmon

Top relations

related to Further reading · 7
Mark Harmon → Built, Coyne, Kate, Last, March, People, Vol
Relatives · 5
Mark Harmon → Gunnar Nelson (nephew), Kelly Harmon (sister), Kristin Nelson (sister), Matthew Nelson (nephew), Tracy Nelson (niece)
related to External links · 5
Mark Harmon → Emmys, Harmon, IMDb Mark Harmon, TCM Movie Database, TV Guide
Occupations · 4
Mark Harmon → Actor, author, director, producer
College · 2
Mark Harmon → Pierce College (1970–1971), UCLA (1972–1973)
Parents · 2
Mark Harmon → Elyse Knox (mother), Tom Harmon (father)
Alma mater · 1
Mark Harmon → University of California, Los Angeles (BA)
Born · 1
Mark Harmon → Thomas Mark Harmon (1951-09-02) September 2, 1951 (age 74) Burbank, California, U.S.
Children · 1
Mark Harmon → 2
High school · 1
Mark Harmon → Harvard-Westlake

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

harmon ncis role series two television also football gibbs film career played episodes starred special agent character ucla los angeles

Mark Harmon relationships Subject–Predicate–Object triples

TTTA extracted 34 structured relationships around Mark Harmon. Examples in this analysis include Mark Harmon → Alma mater → University of California, Los Angeles (BA) and Mark Harmon → Born → Thomas Mark Harmon (1951-09-02) September 2, 1951 (age 74) Burbank, California, U.S.. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Mark HarmonAlma materUniversity of California, Los Angeles (BA)1.00infobox
Mark HarmonBornThomas Mark Harmon (1951-09-02) September 2, 1951 (age 74) Burbank, California, U.S.1.00infobox
Mark HarmonChildren21.00infobox
Mark HarmonCollegePierce College (1970–1971)1.00infobox
Mark HarmonCollegeUCLA (1972–1973)1.00infobox
Mark HarmonHigh schoolHarvard-Westlake1.00infobox
Mark HarmonListed height6 ft 0 in (1.83 m)1.00infobox
Mark HarmonListed weight185 lb (84 kg)1.00infobox
Mark HarmonOccupationsActor1.00infobox
Mark HarmonOccupationsproducer1.00infobox
Mark HarmonOccupationsdirector1.00infobox
Mark HarmonOccupationsauthor1.00infobox
Mark HarmonParentsTom Harmon (father)1.00infobox
Mark HarmonParentsElyse Knox (mother)1.00infobox
Mark HarmonPositionQuarterback1.00infobox
Mark HarmonRelativesKelly Harmon (sister)1.00infobox
Mark HarmonRelativesKristin Nelson (sister)1.00infobox
Mark HarmonRelativesGunnar Nelson (nephew)1.00infobox
Mark HarmonRelativesMatthew Nelson (nephew)1.00infobox
Mark HarmonRelativesTracy Nelson (niece)1.00infobox
Mark HarmonSpouse.mw-parser-output .marriage-line-margin2px{line-height:0;margin-bottom:-2px}.mw-parser-output .marriage-line-margin3px{line-height:0;margin-bottom:-3px}.mw-parser-output .marria…1.00infobox
Mark HarmonYears active1970–present1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Mark Harmon bring nearby vocabulary together. In this analysis, examples include Football, Ncis and Television. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Mark Harmon
    • Football
    • Ncis
    • Television
    • Two
    • College
    • Actress
    • Role
    • Series
    • Agent
    • Character
    • Producer
    • Starred
  • mark harmon
    • Football
    • Ncis
    • Television
    • Two
    • College
    • Actress
    • Role
    • Series
    • Agent
    • Character
    • Producer
    • Starred
  • tom harmon
    • Football
    • Ncis
    • Television
    • Two
    • College
    • Actress
    • Role
    • Series
    • Agent
    • Character
    • Producer
    • Starred
  • kelly harmon
    • Football
    • Ncis
    • Television
    • Two
    • College
    • Actress
    • Role
    • Series
    • Agent
    • Character
    • Producer
    • Starred
  • eleanor and franklin: the white house years
    • Television
    • Actor
    • First
    • Three
    • Film
    • Two
    • Ncis
    • Award
    • Quarterback
    • Appeared
    • Character
    • College
  • ncis
    • Role
    • Agent
    • Character
    • Special
    • Episodes
    • Episode
    • Starred
    • Years
    • Career
    • Played
    • Film
    • Two
  • football
    • College
    • Award
    • Producer
    • Ucla
    • Actress
    • Career
    • Harmon
    • Television
    • Kristin
    • Nelson
    • Quarterback
    • School
  • national football foundation
    • College
    • Award
    • Producer
    • Ucla
    • Actress
    • Career
    • Harmon
    • Television
    • Kristin
    • Nelson
    • Quarterback
    • School

Connections between topic areas Semantic bridges

For Mark Harmon, one of the stronger structural bridges in this analysis connects Mark Harmon with Career. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Mark HarmonCareer · splits 72 ⟂ 66
Mark HarmonEarly life · splits 103 ⟂ 35
Mark HarmonOverview · splits 117 ⟂ 21
Mark HarmonPersonal life · splits 128 ⟂ 10
Mark HarmonOther activities · splits 133 ⟂ 5

Map overview Semantic statistics

Mark Harmon

Nodes138
Edges137
Triples34
Avg. degree1.99
Density0.014493
Components1

Source & methodology

TTTA analyzes the structure around Mark Harmon to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Career, Early life & Overview, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Mark Harmon · EN edition · Analysis: TopicsToTalkAbout

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