Alfred Damon Runyon (October 4, 1880 – December 10, 1946) was an American journalist and short-story writer.
He was best known for his short stories celebrating the world of Broadway in New York City that grew out of the Prohibition era. To New Yorkers of his generation, a "Damon Runyon character" evoked a distinctive social type from Brooklyn or Midtown Manhattan. The adjective Runyonesque refers to this type of character and the type of situations and dialog that Runyon depicts. He spun humorous and sentimental tales of gamblers, hustlers, actors, and gangsters, few of whom go by "square" names, preferring instead colorful monikers such as "Nathan Detroit", "Benny Southstreet", "Big Jule", "Harry the Horse", "Good Time Charley", "Dave the Dude", or "The Seldom Seen Kid".
His distinctive vernacular style is known as Runyonese: a mixture of formal speech and colorful slang, almost always in the present tense, and always devoid of contractions.