Effa is a feminine given name of Old Norse origin. The name Effa is derived from the Old Norse name Efla, which means ever-defiant or ever-courageous. Effa is a popular name in Scandinavian countries, particularly in Norway and Sweden. The name Effa has been in use since the Middle Ages and has been popularized by several notable women throughout history. Effa is a variant of the name Eve, which is derived from the Hebrew word for life or living one. In Norse mythology, Effa is associated with the goddess Freyja, who represents love, fertility, war, and death. Effa is a strong and independent name, symbolizing a woman who is fearless and determined. The name Effa has been associated with several positive traits, including courage, strength, and resilience. Effa is a versatile name that can be shortened to various nicknames, such as Effie, Efi, or Fia. Effa has been used as a surname, as well as a given name, and has been associated with several notable families throughout history. Overall, the name Effa is a unique and powerful name with a rich history and cultural significance. It symbolizes a strong and independent woman who embodies courage, strength, and resilience.

The root form of Effa is Effa — meaning "Effa" has no widely recognized meaning in English..

Effa remains a beloved choice. Timeless appeal across cultures and generations.