Heidi is a popular name in German-speaking countries such as Germany, Austria, and Switzerland. In the United States, the name has had moderate popularity since the 1960s, with a peak in the 1970s.

Heidi is also the name of the famous children's novel by Johanna Spyri, which was first published in 1880. The novel tells the story of a young orphan girl named Heidi who is sent to live with her grandfather in the Swiss Alps. Heidi is also associated with the American model and television personality Heidi Klum, who is known for her work as a Victoria's Secret Angel and as a judge on the reality show "Project Runway".

Heidi Swedberg is an American actress and musician known for her role as Susan Ross on the television show "Seinfeld". She has also appeared in other television shows and films.