List of Famous people who are 21

Ingrid Lehmann is a former East German figure skater and coach, who taught Simone Koch and Hermann Schulz in the 1980s in Berlin.

Dave Grossman is an American game programmer and game designer, most known for his work at Telltale Games and early work at LucasArts. He has also written several children's books, and a book of "guy poetry" called Ode to the Stuff in the Sink.

Russell William Earl is a visual effects supervisor. He has been nominated for five Academy Awards and two British Academy Film Awards, among other awards.

Greg Kroah-Hartman (GKH) is a major Linux kernel developer. As of April 2013 he is the Linux kernel maintainer for the -stable branch, the staging subsystem, USB, driver core, debugfs, kref, kobject, and the sysfs kernel subsystems, Userspace I/O, and TTY layer. He also created linux-hotplug, the udev project, and the Linux Driver Project. He worked for Novell in the SUSE Labs division and, as of 1 February 2012, works at the Linux Foundation.

Anne Seibel is an art director. On January 24, 2012, she was nominated for an Academy Award for the film Midnight in Paris in the category of Best Art Direction. She shared her nomination with Hélène Dubreuil.