Ralphie is a masculine given name, often a diminutive form (hypocorism) of Ralph. It may refer to:

• Ralphie May (1972–2017), American stand-up comedian and actor
• Ralph "Ralphie" Cifaretto, a character on the TV series The Sopranos
• Ralphie Tennelli, a character on the TV series The Magic Schoolbus and The Magic School Bus Rides Again
• Ralphie the Buffalo, mascot of the University of Colorado Buffaloes

• Ralph Scopo (1932–1993), New York mobster nicknamed "Little Ralphie"
• Ralph Wiggum, character in the television series The Simpsons, often called "Ralphie" by his father