Zachary Michael Thomas (born September 1, 1973) is a former American college and professional football player who was a middle linebacker in the National Football League (NFL) for thirteen seasons. He played college football for Texas Tech University, and was recognized as a unanimous All-American. He was drafted by the Miami Dolphins in the fifth round of the 1996 NFL Draft, and played for the Dolphins his first twelve seasons in the NFL. He was selected to the Pro Bowl seven times and recorded 1,720 combined tackles.
Thomas was born in Pampa, Texas. He attended White Deer Schools in White Deer, Texas until he was a sophomore then transferred to Pampa High School in his junior year. He was a standout high school football player and was named a first-team all-state selection as a senior. Thomas and his older brother, Bart, were high school teammates at White Deer High School in White Deer, Texas; in 1988, Thomas' freshman year, the White Deer team went 16–0 and won the Class 1A state championship.