James Plummer

James Plummer may refer to:

• James Henry Plummer (1848–1932), Canadian financier
• James Pratt Plummer, grandson of James W. Parker whose family were kidnapped by Native Americans
• James W. Plummer (1920–2013), American director of the National Reconnaissance Office
• James Ransom Plummer, mayor of Columbia, Tennessee
• Jim Plummer, Canadian-born electrical engineer