Alan Eppes is a fictional character from the CBS crime drama series Numb3rs, brought to life by actor Judd Hirsch. As the devoted and protective father of Charlie and Don Eppes, Alan is a retired city planner who is defined by his strong familial bonds and caring nature. A widower, he often engages in his sons' lives and supports their professional pursuits, showcasing a deep commitment to family. Beyond his role as a father, Alan is actively involved in community service and has a history as an anti-war activist.

In Numb3rs, Alan's character offers valuable insights, from aiding Don in his FBI work to teaching Charlie about engineering. His diverse relationships enrich the show's narrative, notably his budding romance with Dr. Mildred "Millie" Finch. Alan frequently showcases his problem-solving skills, whether through volunteer activities or his efforts to help his sons navigate life's challenges. Ultimately, Alan Eppes represents the heart of family dynamics and the complexities of life, balancing support for his sons with his personal endeavors.