Martínez and his wife Holli have contributed their time and money to Seattle Children's Hospital, including the Edgar Martínez Endowment for Muscular Dystrophy Research, established by the Mariners in honor of his retirement, and the Children's Hospital Annual Wishing Well Night at T-Mobile Park. Martínez has also supported the Parent Project Muscular Dystrophy, Overlake Hospital, Make-A-Wish Foundation, Wishing Star Foundation, United Way, Esperanza, Page Ahead Children's Literacy Program, Big Brothers Big Sisters, Boys & Girls Clubs of America, and Mariners Care. Because of his contributions, on June 20, 2007, Martínez was inducted into the World Sports Humanitarian Hall of Fame in Boise, Idaho.