Martin and his brother Nick, spent their entire elementary years from kindergarten through eighth grade at Saint Matthew Catholic School, in Indianapolis, Indiana, according to their then principal, Dr. Martin Erlenbaugh. The Martins are products of Catholic Youth Organization (CYO) sports in the Archdiocese of Indianapolis.[citation needed] Zack and Nick each enrolled their freshman year at Bishop Chatard High School in Indianapolis, Indiana. Zack tallied 114 pancake blocks during his senior campaign, and was named a first-team all-state selection as a senior and junior. He was a member of the Indiana Class 3A State Championship team as
a sophomore with a 12–3 record, and helped lead his high school team to a 14–1 record and second consecutive Indiana Class 3A state championship as a junior in 2007.
After redshirting in 2009, he became the starting left tackle for the Irish in 2010. He saw action in all 13 games in 2010, and was one of 11 players to start all 13 games for the Irish that season. As a junior in 2011, he started all 13 games at left offensive tackle, and was part of a unit that only allowed 17 sacks during the season. He helped pave the way for a running game that averaged 4.8 yards a carry, the best by a Notre Dame team since 1996. In 2012, he was named one of four team captains for the Irish. He started all 13 games and helped lead the team to a 12–0 regular season record and a trip to the 2013 BCS National Championship Game against the Alabama Crimson Tide, but lost 42–14. He announced he would return to the Irish for the 2013–2014 season.[3]
In his final season, he was named team captain for the second time, becoming only the 18th player in school history to earn such an honor.[4] Martin would start all 13 games, setting a new school record for career starts by an offensive lineman with 52. He was leader of a unit that allowed only 8 sacks, tied for second best in the FBS.[5] He was named MVP of the 2013 Pinstripe Bowl after a 29–16 win over Rutgers, becoming the first offensive lineman since 1959 (Jay Huffman) to receive that distinction in a college bowl game.[6]
In 2015, Martin had a second All-Pro caliber season in as many years despite losing DeMarco Murray to the division rivals Philadelphia Eagles in free agency. Martin and company led the NFL's ninth best rushing attack as teammate Darren McFadden finished fourth in rushing with 1,089 yards. Martin played for Team Irvin along with each of his elected teammates in the 2016 Pro Bowl and was named second team All-Pro by the AP.
On April 18, 2017, the Cowboys picked up the fifth-year option on Martin's rookie contract.[17] He was named to his fourth straight Pro Bowl alongside left tackle Smith and center Frederick for the fourth straight year.[18] He was ranked 71st by his peers on the NFL Top 100 Players of 2018.[19]
On June 13, 2018, Martin signed a six-year, $84 million contract extension with the Cowboys with $40 million guaranteed, making him the highest paid guard in the NFL.[20] He suffered a knee injury in Week 14 and missed the following week, the first time in his career that he had missed a game.
In 2019, Martin became one of five offensive linemen ever to secure a Pro Bowl invitation in each of their first six seasons, joining Lou Creekmur (1950–57), Jon Morris (1964–70), Joe Thomas (2007–16) and Richmond Webb (1990–96).[21]
In Week 11 of the 2020 season, Martin made his first career start at right tackle due to injuries across the offensive line. On December 7, 2020, Martin was placed on injured reserve with a calf strain.[22] He was activated on January 2, 2021.[23]
On September 5, 2021, it was announced that Martin was ruled out for the 2021 season opener due to testing positive for COVID-19.[24]
Martin started all 17 games for the Cowboys in 2022, while playing for 1,143 offensive snaps, receiving one holding penalty and not allowing a single sack. For his efforts, in January 2023, Martin received a first-team All-Pro nod and a spot on the NFC roster in the Pro Bowl.[25]
On September 14, 2023, during the Cowboys' victory over the New York Jets, Martin suffered an ankle injury. On September 24, he was ruled out for their game against the Arizona Cardinals.[26]
Martin married his wife Morgan in July 2016 and has a son and a daughter. His wife is the sister of former NFL tight endTyler Eifert.[27] Before becoming brothers-in-law, Martin and Eifert were teammates and roommates at the University of Notre Dame. Martin's brother Nick is also an NFL center. He also played college football at Notre Dame and was drafted by the Houston Texans in the second round of the 2016 NFL draft.