Jon Kyl, the longtime Arizona senator whose decades of service left a lasting imprint on national defense policy and the state’s water future, has died at the age of 84, his family announced. Memorial services will be announced at a later date.
Kyl’s family confirmed his passing was due to complications from a neurological disease, capping a public life that spanned more than three decades in Washington and a private life rooted in faith and family.
“Our husband, father, grandfather, son, and brother, Jon Kyl, has passed away at the age of 84 due to complications from a neurological disease,” the family said in a statement. They described him as a man who “belonged to all of Arizona,” a state he “loved and explored with vigor, curiosity, and wonder.” The family added that serving in Congress was “a privilege and responsibility he honored and respected,” and expressed gratitude for both his public career and his family life, which they said was “guided by his faith and endowed with honor, warmth, and love.” They said they take comfort knowing he has “joined his beloved Creator, Jesus Christ.”
Arizona Senate Republicans also paid tribute, calling Kyl “one of its finest statesmen.” In a statement, Republican leadership praised him for combining “conservative conviction with an extraordinary command of policy and a deep respect for public service,” noting that he approached every issue with discipline and “never lost sight of the people he represented.”
The statement credited Kyl’s leadership with strengthening America’s national defense, protecting taxpayers, advancing conservative policies, and helping secure Arizona’s water future — highlighting his work on complex water agreements alongside his role in shaping national security policy. “Senator Kyl brought credibility, good judgment, and a determination to deliver results,” the statement read, adding that he “earned the respect of people across the political spectrum without compromising his principles.”
Arizona Republicans further emphasized that Kyl understood public service as more than holding office — it was about “protecting the country, solving difficult problems, and leaving the next generation stronger than the one before it.” They said his example remains one that current officeholders continue to look to in their own service to Arizona, and extended prayers to his wife Caryll, their children, and grandchildren.
Kyl’s political career began in 1987, when he won election to represent Arizona’s 4th District in the U.S. House of Representatives, a seat he held until 1995. He then moved to the Senate, where he served from 1995 until 2013, becoming an influential Republican leader during his tenure. Following the death of Senator John McCain in 2018, Kyl was appointed to temporarily fill his seat.
A University of Arizona alumnus, Kyl was widely recognized for his role in securing water rights for the state — a legacy honored through the Kyl Center for Water Policy at Arizona State University, which bears his name.
In December 2025, Kyl had announced his withdrawal from public life after disclosing a diagnosis of dementia.
