Aileen

Aileen is a feminine given name. It is a variant of Eileen and is used primarily in English-speaking countries.

The name is derived from the Gaelic Éibhlin, a form of Elizabeth. It has several spellings, including Aileen and Eileen; Elaine is a related name though distinct in origin.

In the United States and Ireland, Aileen rose in usage during the mid-20th century and remains in use today, though it is less common than in previous decades.

Notable people named Aileen include Aileen Wuornos, an American serial killer; Aileen Quinn, an American actress best known for portraying Annie in the 1982 film; and Aileen Cannon, an American judge.

As a given name, Aileen carries no single meaning beyond its function as a personal name, but it reflects the broader Gaelic-origin naming tradition that contributed several forms—such as Eileen and Éibhlin—to English-speaking cultures.