Clarence D. Clark (1851–1930), American teacher, lawyer, and politician from New York
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Clarence Howard Clark, Jr. (1862–1916), financier in Philadelphia, Pennsylvania
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Clarence Howard Clark, Sr. (1833–1906), banker, land owner, and developer in Philadelphia, Pennsylvania
Clark Gable | Clarence Thomas | Clark | Petula Clark | Lois & Clark: The New Adventures of Superman | Clark Kent | Clark County | Clarence Darrow | Dick Clark | Clark County, Nevada | Roy Clark | Guy Clark | Helen Clark | Lewis & Clark College | Joe Clark | Wesley Clark | Jim Clark | George Rogers Clark | Clark University | Clark Howard | Clark County, Washington | Clark Ashton Smith | Alan Clark | Lewis and Clark Expedition | Kimberly-Clark | Fort Clark, Texas | Tom C. Clark | Clark Atlanta University | Clark Air Base | Clarence "Gatemouth" Brown |