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John Ross J.R. Ewing Jr. is a fictional character in the hit U.S. television series Dallas (1978–91) and its spin-offs including the revived Dallas series (2012–14). The character was portrayed by actor Larry Hagman from the series premiere in 1978 until his death in late 2012. One of the show’s most iconic figures J.R. has been central to many of the series’ biggest storylines.