A computer-implemented method for customizing user icons may include (1) detecting that a user has accessed an application, (2) automatically capturing an image of the user in response to detecting that the user has accessed the application, (3) abstracting the image of the user to produce a customized representation of the user, and (4) overlaying the abstracted image of the user onto an icon within the application. Various other methods, systems, and computer-readable media are also disclosed.