Lawrence Mack Sampleton, Jr. (born September 25, 1959 in Waelder, Texas) is a former American football tight end in the National Football League for the Philadelphia Eagles, from 1982–1984, and the Miami Dolphins in 1987. He was drafted by the Eagles in the second round of the 1982 NFL Draft. He played college football at Texas. Sampleton currently serves on the Board of Directors of the Secondary School Admission Testing Board and Director of Admission and Financial Aid for the Prairie View A&M Foundation.