James Flanagan

• James Flanagan (police officer), chief constable of the Royal Ulster Constabulary
• James Flanagan (rower), American rower who won a medal at the 1904 Summer Olympics
• James H. Flanagan, founder of the Society of Our Lady of the Most Holy Trinity
• James L. Flanagan, engineer and researcher for Rutgers University
• J. W. Flanagan, U.S. senator from Texas