William D. Wittliff (born 1940), American screenwriter, author, and photographer
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Phil Wittliff (born 1948), American ice hockey player, coach, and executive
Wittliff wrote screenplays for the Lonesome Dove mini-series (1989) for which he won a Writers Guild of America Award in 1990 for Season 1, Episode 1: "Leaving." and a Bronze Wrangler award from the National Cowboy & Western Heritage Museum.
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Wittliff was a Kappa Sigma at the Tau Chapter at the University of Texas; he was initiated in 1959 and in 2012 became the Fraternity's 79th recipient of the Man of the Year distinction.