Roy Alvin Baldwin (January 2, 1886 – October 2, 1940) was a Democrat from Slaton in Lubbock County, Texas, who represented District 119 in the Texas House of Representatives from 1923 to 1925. In this capacity he was co-author of the legislation establishing Texas Tech University in nearby Lubbock. His district encompassed fourteen counties in West Texas. In his first House tenure from 1920 to 1923, he represented the geographically similar District 122.