Sanchez is an avid fan of musical theatre.
He was a presenter at the 2010 Tony Awards, where he introduced a number from the Broadway musical Memphis.
Sanchez has been involved in multiple charities including the Juvenile Diabetes Research Foundation to help raise awareness for Type 1 diabetes and Sam's Club's Giving Made Simple which, helps raise awareness about childhood obesity and how families can prevent it.
Sanchez has also worked with the Teddy Atlas Foundation through which he met Aiden Binkley, a terminally ill 11-year-old struck with rhabdomyosarcoma.
Sanchez developed a bond with Binkley and the two remained close friends until Binkley's death in December 2010.

Sanchez's father is a fire captain for the Orange County Fire Authority and a member of the national urban search and rescue team.
In college, Nick Sanchez played quarterback for East Los Angeles College and was later a sergeant in the United States Army.
His two older brothers both played college football.
Nick Jr. attended Yale University, where he played quarterback while Brandon attended DePauw University, where he played on the offensive line.
Nick Jr. went on to attend the USC Law School and is a business attorney; Brandon became a mortgage broker.

Sanchez is a Christian.

In June 2016, a lawsuit filed by U.S. Securities and Exchange Commission alleged that Sanchez's broker conducted a "ponzi-like scheme" which defrauded Sanchez, as well as Roy Oswalt and Jake Peavy, out of US$30 million.
Sanchez is an avid fan of musical theatre. He was a presenter at the 2010 Tony Awards, where he introduced a number from the Broadway musical Memphis. Sanchez has been involved in multiple charities including the Juvenile Diabetes Research Foundation to help raise awareness for Type 1 diabetes and Sam's Club's Giving Made Simple which, helps raise awareness about childhood obesity and how families can prevent it. Sanchez has also worked with the Teddy Atlas Foundation through which he met Aiden Binkley, a terminally ill 11-year-old struck with rhabdomyosarcoma. Sanchez developed a bond with Binkley and the two remained close friends until Binkley's death in December 2010.
Sanchez's father is a fire captain for the Orange County Fire Authority and a member of the national urban search and rescue team. In college, Nick Sanchez played quarterback for East Los Angeles College and was later a sergeant in the United States Army. His two older brothers both played college football. Nick Jr. attended Yale University, where he played quarterback while Brandon attended DePauw University, where he played on the offensive line. Nick Jr. went on to attend the USC Law School and is a business attorney; Brandon became a mortgage broker.
Sanchez is a Christian.
In June 2016, a lawsuit filed by U.S. Securities and Exchange Commission alleged that Sanchez's broker conducted a "ponzi-like scheme" which defrauded Sanchez, as well as Roy Oswalt and Jake Peavy, out of US$30 million.
Mark Sanchez