Stephanie or Stefanie is a feminine given name. It is one of the feminine forms of the masculine name Stephen. In other languages the name may be spelled differently, for example, Italian Stefania, Spanish Estefanía. For its meanings, etymology, pronunciation, and translations, see Wiktionary.

People and things commonly known solely by the given name Stephanie include:

• Princess Stéphanie of Belgium (Stéphanie Clotilde Louise Herminie Marie Charlotte of Saxe-Coburg and Gotha) (1864–1945), wife of Crown Prince Rudolf, heir to the Austrian imperial throne, daughter of King Léopold II of Belgium
• Stephanie of Milly (d. 1197), lady of Oultrejordain and an influential figure in the Kingdom of Jerusalem
• Princess Stéphanie of Monaco (b. 1965), youngest child of Grace Kelly and Prince Rainier of Monaco
• Princess Stephanie of Windisch-Graetz (b. 1909), Austrian artist, daughter of Elisabeth Marie Henriette, Archduchess Elisabeth of Austria, daughter of Crown Prince Rudolf
• Stephanie of LazyTown is a fictional character in the children's TV show LazyTown, currently played by Julianna Rose Mauriello.