Sue may refer to:

• a shortened form of Susan, a feminine given name.
• the action bringing about a lawsuit.
• Mary Sue, a derogatory name for a fictional character who is an idealized stand-in for the author.
• the most complete skeleton of Tyrannosaurus rex found to date, housed at the Field Museum of Natural History.
• A river in Italy.
• the orange female ghost from Ms. Pac-Man.
• SUE (Schematic User Environment) is a schematic editor which was developed at Stanford and is now a commercial product.
• The short name for the song, A Boy Named Sue.
• a nickname of Yoshiko Tanaka at Candies period.
• The book series A Series Of Unfortunate Events

People named Sue include:

• Eugène Sue, a French novelist.
• Sue Perkins of the comedy duo Mel and Sue.