Wednesday Addams is a fictional character that was created by cartoonist Charles Addams in 1938. She first appeared in the New Yorker magazine in a series of cartoons that depicted a macabre and darkly humorous family known as the Addams Family. Since then, Wednesday has been featured in various forms of media, including television shows, movies, and books.

In terms of her age, Wednesday Addams is typically portrayed as a young girl who is either pre-adolescent or adolescent. However, her exact age varies depending on the specific iteration of the Addams Family story.
In the original cartoons, Wednesday is not given an explicit age. However, she is depicted as a young girl who is typically dressed in a black dress and has long braided hair. In the 1960s television series, Wednesday is portrayed by actress Lisa Loring and is depicted as a pre-teen or early adolescent. In the 1991 film adaptation of the Addams Family, Wednesday is played by actress Christina Ricci and is depicted as a teenager.
More recent adaptations of the Addams Family have continued to depict Wednesday as a young girl or teenager. For example, in the 2019 animated film, Wednesday is portrayed as a student at Nevermore Academy, a gothic boarding school that her parents send her to. While her exact age is not given in the film, she appears to be in her mid-teens.
Overall, while Wednesday Addams’ age varies depending on the specific iteration of the Addams Family story, she is typically portrayed as a young girl or teenager. Regardless of her age, Wednesday remains a beloved and iconic character who has captured the imaginations of generations of fans with her dark humor, dry wit, and love of all things macabre.