The notable writer recognized for creating the character Jay Gatsby is F. Scott Fitzgerald. He published "The Great Gatsby" in 1925, a seminal work that explores themes of wealth, love, and the American Dream. Set in the Roaring Twenties, Fitzgerald's novel critiques the moral decay of society and the elusive nature of dreams. Gatsby, an enigmatic millionaire, epitomizes the pursuit of success and the complexities of human relationships. Fitzgerald's work remains a cornerstone of American literature, noted for its rich symbolism and lyrical prose.